Don't let your inbox pile up.
I just spent at least four hours cleaning out the junk from my inbox that I let sit for months now. Just remember guys, once you are done with something, delete it, otherwise it takes up space that slows down your account. Especially buddy list requests, once you confirm them, delete them. Once i've deleted all the junk, my account has been working noticeably faster. So remember folks, tidy up once in a while.