It's an odd thing: there seem to be more and more projects popping up, but my sales on parts have dwindled to nearly nothing.
I'm not sure it's so odd. My guess is that your drop in sales is proportional to your activity on these boards. Whether that be in specific forums, specific threads, or all together.
During my first 6-months at BYOAC I was actively looking for parts, trying to figure out what to build, what to buy etc. During that time period, I was repeatedly reminded that you were selling parts. OTOH, until I read this thread, you've almost completely dropped off my radar as far as being a 'seller' goes.
I'm still looking for parts, so that's not it. It has to do with how many non-EE threads you might post to and what they're about. I feel like I used to see your posts in B/S/T regularly. At the point I was ready to buy QDs, I was very aware that you had them. I remember having to use the forum's search function to figure out how exactly I'd buy them from you (looking for a link to your site) but you were in my buying conciousness.
Now? Not so much.
Have you gotten any sales since you started this thread? If so, then it's just because people are aware of you again. If not, then give it time and I bet this thread will bring you some sales.