Sure but a larger community discussing reptiles also = more buyers for the sale ads. if you can't find the discussion easily I think you'll lose some great people. We can't buy something new everyday
It's just a thought and I know I'm a noob on the board. For whatever reason, the reptile community seems very fragmented when it comes to message boards and I'd like to see one great board where you can get info and also shop with a lot of feedback on vendors.
What makes this board hard to read is that it's divided into so many sections that it's difficult to participate other than using the 'new posts' feature. Unfortunately, while using that feature, you are so inundated with ads that it's hard to find the content. Arachnoboards, for instance, has a ton of sale ads, but it's dwarfed by the discussion areas which are very easy to access. Therefore you can read about a super cool spider, then go check out the classifieds for a bug
Just my thoughts on what might be restricting your discussion area growth. It would be really awesome if there was a way to search new posts while excluding sale ads and then another search to look at the ads.