I think it's as good a site as I've seen, including those designed by full-time experts. But, and you seem to be looking for "buts", what is the intended market? What should set it out from others? If I hadn't come across the link on this forum, how would I have been drawn to the site? Mind you, I wouldn't have known many of the sites in My Favourites (where your site is destined) without referals from the worthies here!
Keep it up. I'll be revisiting periodically.

The thirst for knowledge is sometimes sweeter than a pint of Stella - now using XP