RPGNow category pages and reviews
Arnix, here are a few thoughts that might help you if you decide to produce PDFs.
Posterboy wrote about RPGNow that "Many of the books in the top 10 are there from the earlier day's of rpgnow.com" and while that's more true of the main pages, in the category pages you can also see how well
like products are against like products (i.e. what's doing well in d20 sourcebooks, etc.). For example, I have a monopoly on
Accessories: Name Tables so people can rank how well the sales are one PDF vs. the others.
If you do go the RPGNow route, it might help if you include links directly to your products as well as to the category pages you appear on. For example, "Role Playing: Fantasy d20: Low Level Adventure" is at
http://www.rpgnow.com/default.php?cPath=1_260_269&, "Role Playing: Fantasy d20: d20 Campaign Books" is at
http://www.rpgnow.com/default.php?cPath=1_260_279&, "Role Playing: Fantasy d20: d20 Sourcebook" is at
http://www.rpgnow.com/default.php?cPath=1_260_270&, etc. While these are readily available on the left (and very useful), I've wondered how many people use them (Turjan, for example, wrote "I browse the two columns on the right, best sellers and new products. Anything else? No."). Maybe directing people to these pages would help sales.
This can be helpful when you're first getting started, as you're not likely to start with reviewed products. If your products are selling well, it isn't a testimony to your product's quality, but it might help sales if onlookers see that you are selling well and positioning high without (or with few) negative comments. No news is good news. Just a thought.
On the review topic, when submitting material for reviews, expect some turnaround time. This glut of roleplaying products you hear mentioned so frequently also backlogs many reviewers (picture them as sailors on a sinking ship trying to bail, but armed with spoons and no buckets...)
Good luck!