The other important differences, B-C is that all of the items you get from Posewrworld are of consistant, commercial quality, made by Steve Shanks an excellent modeller. The site is updated with new items approximately once a week give or take (longer lead time usually means bigger and better additions). Finally, since you purchase the items you can use them for commercial renders, something forbiddin by many, maybe even most, free stuff providers.

There is also a forum there as well, and Steve is usually very gracious and prompt about building requests.

They do (or did, I haven't looked lately) occationally offer a free item on their opening page. Also I think there is a regulaar store where some of their items can be purchased individually. I'm not sure about these last 2 items however, I've been a lifetime member for years... the best  $100 Christmas present I ever got! so I usually go straight to the "what's new" page.

mike