Hello 2 questions: after someone rated a link. In order to update the result I have to use build all right? I have tried to use build changed but didn't seem to work. Or is there some other update I can use?

I think it's possible to display rating as graphics like stars. 1-5 stars to be exact. Has someone posted how to do this yet? Thank you!

Check out the Resource Centre for the graphical ratings mod.

The ratings will show immediately on a dynamic site but I do think you need to use build all on a static site. I'm sure that build changed is supposed to do this but doesn't seem to.