How do you handle long RP focused on one character?

[PersonMan]

Also, amnesia is awesome. Don't let anyone tell you otherwise. Okay, sometimes it's not but still.

I agree. The list linked to seems to be how not to do things that are normally fine, rather than what not to do at all.

I'll add one more opinion on the "rotate in small increments", maybe sprinkle some "sideline participation while not in the spotlight" in, too.