I have been here for about a year now and have three suggestions for improving the forums.
1) In the "classified" titles, require a location. I might really want a drum sander and there might be one posted, but I would only buy it if it were reasonably local. Since there is no way to know where it is without opening the post, it really isn't worth my time to even go to "classified". I expect activity would double or triple if locations were required in the titles.
2) I don't see the point of "lumber yard". The activity is so low that it is not really worth going there. The little activity there should be thrown into "off topic". I understand it is everyone's right to use it or not as they choose, but I think the whole site would be better without it.
3) I would like to see a "home improvement" forum added. I have gotten better advice here in "off topic" than I have at dedicated home improvement sites, but I think it might be even better if there were a separate forum.
Just my $0.02.