UPDATE: GameKnot (AKA ChessColony.com) has decided not to answer any of my queries regarding my account lockout. Another person at my office, who had purchased a lifetime membership, was accused of manipulating his rating. When they looked at the fact that he and I play from the same IP address (corporate firewall) and frequently at the same time (when we return from lunch, where we play chess, likely). That they have decided to give me the silent treatment for a week, and remove me from my team, I can highly recommend that you stay the hell away from their service.
For some reason, Gameknot.com has decided to lock out my user account. The only thing that I can do with it is play the current ongoing games that I have. I can not look at team statistics, download my games library, contact team members or friends or leave messages on ongoing game boards.
I have sent a message to their administrators to see just how I have broken their rules and terms of service, or whether they have just chosen to stop serving my account (part of the terms of service says they don't HAVE to provide me with an account...fine with me!). I know that I have used this space to recommend GameKnot in the past. However, I will be appending that blog post with information about this turn of events to help others to avoid having to deal with their accuse-first-ask-forgiveness-later tactics. There is no way that I would recommend that you use their service under these conditions. This has made me feel like a third-class citizen.
UPDATE: I found from a message from my team captain that the reason my account was banned was because they think I MIGHT be a duplicate account of someone else who plays from the same IP as me (occasionally). This person happens to be a coworker of mine who signed up to the service based on my recommendation. He had been ACCUSED of ratings manipulation, his account put on restriction, and they're keeping his lifetime membership fees. I know that he has not lost chess games on purpose to manipulate his ratings. He may have slow played games on the site, or played only people rated lower than himself to watch his rating go up and down, but his account should have no bearing on my own.