It has long been a mantra in SEO land that user generated content sites in general and forums in particular are to be aggressively down ranked. The reason for this is that industrial strength spam farms otherwise spin up tens of thousands of forum domains to pass link juice to what they are targeting. This naturally penalizes real forums, which often contain the best content for a query.

This is why Google has basically surrendered and why so many search result categories are now dominated by whatever sites Google has arbitrarily declared the winner through editorial decision making. In many search categories, we are effectively back where we started with Yahoo directories and hand-picked search rankings. What you see on the first page SERP is the best that they can do under the circumstances based on the fundamentals of how search works.

The web was a fun idea while it lasted, but if you are using it as a primary information resource, you are wasting your time.