As far as I see, table qa_words holds all search terms of the q2a forum, and qa_contentwords maps it to the questions. In my db first one has 5.5 MB and the latter already 73 MB!
We all have problems finding stuff with q2a search, it still seems to lack a convenient search algo, see also "Improving the search" post.
This is why I decided to implement Google Custom Search, which gives the power of google search filtered to your site. The only drawback, it adds advertisement (google adwords/adsense)... what I personally dislike.
For an example click on search at: http://www.mathelounge.de/
Anyways, my question for now:
Do I still need the table "qa_contentwords" after the implementation of a new search? Looking to the code, it seems really deeply implemented...
Can I easily "disable" qa_contentwords somehow? Or how can I keep it empty?