Hello.
Its my first request
On phpbb i had a small hack which let users ignore topics.
That was checkbox on forumdisplay, on the left of topic title, and, button ignore on the bottom of the page.
Users can ignore topic ( topic dissapera on forumdisplay and search results ).
In profile user had list of ignored topics, and there can uncheck choosen ones
I hope You know what i mean ;)

That mod is already done, on vb.org.
Sorry for that .