I enjoy using Synergy, but it's causing me some pain since I am unable to effectively mouse-look on a slaved computer. The camera angle does things that I never have the mouse do and it usually just ends up looking directly up or down.
Multiplicity claims to be effective for MMO gamers; has anyone here tried it?

Also, I'm currently using HotKeyNet to do just about all of my character control. Does something like Keyclone support what I want? I don't believe HKN will broadcast anything more than mouse clicks.

Of course, it's likely that I'm missing some other software packages that might be even better for me.

Ideas, anyone?