First off, you should bear in mind that Renderosity was originally just a Poser forum (called 'Poser Forum Online'), and it shouldn't be surprising that's what has remained its main area of focus. But I think you'll find the overall Poser scene is unique in the online 3D graphics world in its level and type of following. I believe this is because the program deals mainly with human figures, and humans are evolved to have a great interest in 'people' (and yes, that includes a big sexual interest). A 'real world' analogy could be made in comparing the interest in astrology with that in astronomy. Astronomy is an intellectual interest dealing with hard facts about an aspect of the natural universe; astrology is an emotional interest in how the planets and stars (supposedly) effect people. If you go to a normal book store, you'll find the astrology section is at least ten times the size of the astronomy section. Bryce deals mainly with landscapes; Poser deals mainly with 'people'.