I have a simple suggestion that I wanted to throw out on the table. If you implement this into a premium account then you've instantly convinced me to upgrade.
Would it be possible to adjust the quick search function to EXCLUDE the advertising forums - or make this a configurable option. It shouldn't be to hard to hack something like that together.
My problem is that when I search for common words or phrases, a large number of the results are from the advertising forums, which contain the word but not the information I'm searching for. I then must do the advanced search to filter out these forums which takes more time.