He is not really delaying if he's using his allotted time. Did you also check to see how many other games he has going? Also, do you know what kind of lifestyle he leads? Maybe he's a busy guy. Perhaps he has health problems or is a retired doctor sailing the world with his new wife, a la "Stepbrothers."
Boats 'n Hoes.
don't play that person again if you can avoid it. Meanwhile, he is doing nothing wrong --- annoying, but within his rights. I suggest you use the notes page to remember your ideas and start another game while you wait. Its all you can do.
You only have 3 games going. Start another one if you are so anxious to play.
Plus, if you check that dude's profile, you'll see he is 113 years old. So you should cut him some slack.
if you're in a hurry to lose play 10min games 
if you're in a hurry to lose play 10min games
that's a good one, i prefer to lose even faster
(a) There's not really a problem here. If it's that much of a problem, start another game, or ask him/her to speed up their pace of play. I routinely take close to the maximum amount of time to make moves--I've had people ask me to play more quickly, and I've done my best to comply.
(b) Even if there was a problem, you shouldn't go to the forums to call somebody out--at least, you shouldn't complain about someone specifically. You can contact them directly, or if it's serious, contact the Chess.com staff. Going to the forums to compain about a specific user (username included) is, in my opinion, bordering on trolling.
I believe the semi-official term is "naming and shaming" and it is greatly frowned upon by moderators. In this case they're probably not doing anything since there is no "shame" in taking your time to make a move.
You know the time control. You should be expecting a player to use all his alloted time at all times. If he does not, he does not, then so be it. BUt if he takes his alloted time, leave him alone, and don't complain. That's what the time control is there for.
He is not really delaying if he's using his allotted time. Did you also check to see how many other games he has going? Also, do you know what kind of lifestyle he leads? Maybe he's a busy guy. Perhaps he has health problems or is a retired doctor sailing the world with his new wife, a la "Stepbrothers."
Boats 'n Hoes.
I think playing to your alloted time is a guideline and not something one does as a rule. Ditto with vacation time. There are many moves that require no pondering at all. We're up to move 19 and I've been playing this one game with him for months! This guy is a serial frustrator and that's how he wins games I'm sure; people just get fed up and throw in the towel. There is absolutely no excuse for poor sportsmanship. He needs to be named so that others know what they get when they play with him. I've also messaged him and he has just switched off the chat.
I think playing to your alloted time is a guideline and not something one does as a rule. Ditto with vacation time. There are many moves that require no pondering at all. We're up to move 19 and I've been playing this one game with him for months! This guy is a serial frustrator and that's how he wins games I'm sure; people just get fed up and throw in the towel. There is absolutely no excuse for poor sportsmanship. He needs to be named so that others know what they get when they play with him. I've also messaged him and he has just switched off the chat.
"Serial frustrator". I'll have to remember that one. 
I've been playing a game, 3 day time control, since May 1st. I'm waiting for my opponent to begin move 39 and it's likely this game will drag on for several more months. So what? I don't mind, and if I did, too bad. That's what I signed up for when I started the game.
Think of it this way: it's assumed that your opponent will use almost all of his/her time, every move. They might also use some vacation time. Any time they don't is a bonus, not the rule.
You can always start some more games. If 3 days is too long of a time control for you, try 24 or 48 hours. As for me, I only play 3-day and 7-day games, with the occasional 14-day one.
You might not want to play against me. I'm a REALLY slow thinker. But if that's the case with you, I guess you could play turn-based chess against me.
Thanks for your comments. Understood. 
I think playing to your alloted time is a guideline and not something one does as a rule. Ditto with vacation time. There are many moves that require no pondering at all. We're up to move 19 and I've been playing this one game with him for months! This guy is a serial frustrator and that's how he wins games I'm sure; people just get fed up and throw in the towel. There is absolutely no excuse for poor sportsmanship. He needs to be named so that others know what they get when they play with him. I've also messaged him and he has just switched off the chat.
This topic has been discussed many times and everytime hoards of ppl come up with 'they are entitled to do so'. I agree with above post that it may be technically rightful to play every move using every min. of ur allowed time but it is not a good sportsmanship. My opinion on points raised by different ppl here:
I've started to play only 24 hr. time control games, mainly because 2 or 3 days take too long in my experience. I've only done it for about a month, and doing so seems to be moving my games along. I specify 1 day when I post a game and intend to simply indicate to anyone challenging me that I only accept a one day time control. There appears to be a lot of players who also want 24 hours and will accept games with that understanding rather quickly. Also, I try to play only premium members. Generally they are mostly serious chess players and seem to want to learn more about chess and to play in a timely manner. I'll post how this plan works out a month or two later. If anyone is doing this, it would be helpful for that person or persons to post how that is going.
Not everyone has an iPhone. I play from my desktop and some days I just don't get to it. Some days I don't feel like it. That's life dude. 3 days isn't that bad. I play a friend of mine and he only plays 14 days and timed out on that in an equal position. It's not always malicious.
I know denner... thats why it is correspondence chess that one move at his leisure but problem is when ur opponent does this for every move. A match goes easily for 3-4 months. In those 3-4 months, some will be busy days some won't and if somebody taking maximum time for every move, it can stretch a game up to 7-9 months and it can be frustrating.
The other bad assumption that people make is that the 3 days are intended for "you have 3 days to log in", and that if you log in before 3 days, then you should make your moves.
Uhm...No!
I have roughly a dozen games going right now. When I logged in, 7 of them were my move. Now? There's still 4 where it's my move. I take care of the obvious ones first, or the ones where I know I'm winning and just mopping up against a guy that won't resign.
I'm in a tournament where you play 3 other players per round a White and a Black each and at the same time. 6 games. Top 2 advance to the next round in each of the 4 sections. I'm assuming the top 2 will advance to the 3rd and final round. One of the 3 players I'm facing CLEARLY just logs in and makes a move. He moves way too fast. He hung his Queen against another player in my Quad (This is the North Carolina over 1650, by the way), and against me, he just made rapid moves to drop a pawn, and the endgame was busted for him. I completed that game (28 moves), and in my game with White, I'm still only in the mid-teens, and it's my move, and I've looked at the current position twice already.
That's how Correspondence works. Suck it up dude!
I think playing to your alloted time is a guideline and not something one does as a rule. Ditto with vacation time. There are many moves that require no pondering at all. We're up to move 19 and I've been playing this one game with him for months! This guy is a serial frustrator and that's how he wins games I'm sure; people just get fed up and throw in the towel. There is absolutely no excuse for poor sportsmanship. He needs to be named so that others know what they get when they play with him. I've also messaged him and he has just switched off the chat.
This topic has been discussed many times and everytime hoards of ppl come up with 'they are entitled to do so'. I agree with above post that it may be technically rightful to play every move using every min. of ur allowed time but it is not a good sportsmanship. My opinion on points raised by different ppl here:
one may be too busy to play moves -Who ask such busy players to have hundreds of games going on at a time? Most of such 'seriel frustrators' have this common trait.I know couple of ppl have more than 1000 games going on. Start another game- sure. If I play a game I put lots of efforts in thinking good combinations and it is not a pleasent feeling to throw that match in a dumpster and say I don't care abt that game anymore. Unecessarily delaying games is an insult to ur opponent. They are within their rights to use all the alloted time- Technically yes but using all the time to very simple or forced move situation is a bad sportsmanship? Certainly.I don't think it is bad sportsmanship at all. People who play lots of games do it because they enjoy it. If you don't like playing long games, don't play those people! But don't go complaining after you've already started a game that you wish you hadn't. When you start the game, you agree that your opponent can use all the time they need to make a move, within the time constraints. Period.
My opponent Whirligig delays constantly. (a) He uses all of the three days allowed to make any move no matter how simple. (b) He has been on vacation twice for long periods of time. It is extremely frustrating to play with him.