I've found a fun online football sim called Goal Line Blitz. Essentially you create and manage a player or even multiple players. You develop them, haggle over contracts, etc. Over time you can become a GM or even get to own your own team. It follows American rules but it isn't affiliated with the NFL.
It's also free. Seeing as how a lot of people here like fantasy football and Big Dave's VGCC I figured they would probably like this. They ask for an e-mail address but it doesn't require a confirmation (so you can use a fake one) and I've not received any spam since signing up. Anyway give it a try. I'd love to play with or against some of you.
Also if you sign up using this link:http://goallineblitz.com/game/signup.pl?ref=16677618
I get a bonus for referring someone to the game. PM me if you sign up, either here or there. My account name there is D.Allen. Cheers!