Forum Search engines are internet marketers' best friend. You can search for forums on any topic or subject.
*You can search forums by the post title.
* Search for
discussions in 35 languages,
* Sort by date when the topic is created and
also sort by minimum number of replies
In addition, I urge you to visit http://google.omgili.com/
Do a search on any topic and scan the search results closely.You would notice next to each results, some numbers that indicates how many times that result is mentioned on different forum topics in addition to view it. This is very useful folks.
For example, if you want to see what people say about a specific website, you could gather that data.
I use Omgili quite often to find forums for signature marketing, blog commenting and guest posting.