http://www.terrarium.pl/forum/142-warany/ but here is a chance when i click on random prefix to add to for example
http://www.terrarium.pl/tags/forums/%C5%BCywienie/
http://www.terrarium.pl/tags/forums/%C5%BCywienie/?search_app_filters[forums][forums][]=142
so you know just to show prefixed topics from that forum ? [btw if i turned off special chars in urls, prefixes should also respect that:P ]