Just launched today - a brand new type of fantasy baseball management game, 
SimYard!

http://www.simyard.com/

Features:

 - Create your own team, choose your name, colors, and logo.
 - Recruit and dismiss players as you choose.
 - You create the lineups and the pitching rotations.
 - Play live games against other players.
 - New season every month, ending in a huge tournament.

Sound like fun?

http://www.simyard.com/

It's free, so try it out!