Xfcc support -- http://www.xfcc.org/ -- is a great feature for correspondence players. ICCF and SchemingMind both support it (on the server side) and for clients we have SCID and ChessBase as well as some non-database clients.
Despite what the "cheat" obsessed seem to think, it has nothing absolutely nothing to do with cheating. Cheaters will jump through endless hoops to cheat, lack of convenience isn't an issue for them and the main of players shouldn't be punished because of a few idiots.
Xfcc allows players who take their correspondence games seriously to better manage their games, store their non-engine analyzed lines, make use of their databases and opening books, etc. Serious players are going to keep notes documenting ideas and possible variations whether or not their server makes it easy to do so. Xfcc makes life better for them.
FWIW, I understand that Austin over at SchemingMind was successful in convincing ChessBase to disallow engine kibitzing for Xfcc games from SchemingMind.


The stats dashboard on the main page would be improved, I think, by adding a couple of additional stats once you're logged in: "Friends Online" and "Opponents Online".