What does resynchronizing your forums do exactly?

Hi I have a small problem with the request exceeding limit message sometimes popping up and I herd about resynchronizing my forums what does that do exactly? will it erase anything?

the resynchronise function has nothing to do with your problem.
The "request limit exceeded" message is because the load function is used too many times. You don't have the website field available in your profile so I cannot see your forum, but usually this message is received when you add some effects on your forum, like the one showing the avatars next to the last posts in the index. If that's the case, then you should remove the code. It's the only way to get rid of the error message.