Who should I drop on my team for sidney rice, jacoby ford, seyi ajirotutu and/or nate burleson?

I think you are jumping the gun and I don't really see how adding any of these guys will help you. Rice may not reach 100 percent until next season. Ford and Ajirotutu had big games for the first time this season, and when looking at their yardage total you have to consider the fact that it's an illusion. One had a long reception of 55yards and the other a long of 47yards. Also when Gates returns to the Chargers Ajirotutu will go back to being mediocre. Nate Burleson is good for an occasional score, and that's just when Megatron is doubled up. If you do drop anybody I would go with dropping Williams for Rice.