Growweedeasy has a more topical format to find things. That seems to be popular.
The problem with searching forums is that a forum is just a conversation. There's no structure. You could have to read 10 pages only to find out something important changed (compared to the info you read in the first 2 pages). Forums would be perfect if they had a wiki, and information from conversations could be summarized as topics. Important context (like, the info is about hydro, not soil) may not be evident without reading the entire conversation. Forums aren't the right tool for organizing information for easy discovery. (Just like wikis aren't the right tool for conversation.). There's a lot of good info on forums. But, it can be time consuming if you're just trying to get a "lay of the land" orientation to growing. You can end up with wrong ideas (not knowing how a practice is for outdoor, not indoor; or for soil, not hydro, etc. It's easy to make the wrong associations because forum discussions often don't emphasize that. Or, a google search lands you on page 87, long after many of important details were provided.).