The long-term commitment aspect of correspondence chess was a big turn-off for me. I've had people take a long vacation even before the first move. In such a case I simply resign rather than keep a game going which I may otherwise forget about. It is difficult to foresee whether I will have time to spend on a game 6+ months from the present. I have come to the conclusion that correspondence chess is not for me. I just play speed and longer games. I do play Vote Chess however and that may be an option for you as well. With Vote Chess other people can pick up the slack, and there is no possibility of vacations.
Suggestions for correspondence chess re. resignations

I am OK with making a commitment of a few months, but when a game is totally lost I find it annoying to have to go through the motions to finish it off when those motions may take a month or more.
I assume there is a fairly reliable (via computer analysis) way to see how often people resign lost games, as not resigning lost games can be just as annoying as timing out - perhaps more so - I think it would be a good addition to the seek criteria.
Edit: Another idea might be to have games have a total time to play out, say 15 days to make all of ones moves for example, akin to normal games but over a much longer time period. This would ensure that people who are going on vacation or might otherwise not be able to play past a certain time period could ensure that a game is finished in that time period. If someone wanted to play a longer game but couldn't necessarily play past 30 days, a 15 day per person per game game would be perfect.

I assume there is a fairly reliable (via computer analysis) way to see how often people resign lost games, as not resigning lost games can be just as annoying as timing out - perhaps more so - I think it would be a good addition to the seek criteria.
bump. there are some good ideas here.
the W/L/D display could be further broken down to indicate how many of each player's wins/losses were due to checkmate, resignation, and timeout. the various draw conditions could be tallied too.
of course, refusing a offered draw in a game that later ended in a forced draw (especially the 50-move rule, lol) might be recorded as a potential red flag, but offering draws that are refused by the other guy is just bad luck.
i like the idea of "total thinking clock" time control option for correspondence games. with an option for per-move increment measured in hours or fractions thereof, per preference of the player creating the open seek.
I would like to see a way for people to see which one of their potential opponents are non-resigners in lost positions in correspondence ("online") chess so that they may have the opportunity to avoid playing them them before a potential game starts.
When someone is totally lost (no realistic chance of winning, and only a minuscule chance of drawing via stalemate), I - and undoubtedly many others - believe it fair to request that they resign.
The monotony is annoying enough for mate in 5 moves or less-type situations, but when such a person has diamond membership they can essentially draw out completely lost endgames indefinitely, as their vacation protection allows (as I understand it) them to not move at all as they never run out of vacation time. If the game is mate in 15-20+ moves this is all the worse, especially if their competitor is taking a break from online chess for a while, and is instead forced to either a) resign a completely won game or b) check back over weeks or months (or potentially longer) to see if their opponent has moved, so as not to lose said game on time themselves.
I would have to believe that a something beneficial could be reached on this subject, maybe something similar to the "times out less than __% of games" check box, perhaps "resigns more than __% of lost games".
In addition, in line with the above I would like to have a way (I am unaware of one existing at the moment) to block a given player from accepting my (open) online/correspondence chess challenges. I know this exists for live chess, I see no reason not to include it online chess as well.
Having a "notes" feature in which one can take (permanent) notes on players would be nice as well, not only to prevent problem such as above, but also to easily plan ones play against them should multiple matches happen over time.