Old Poserworld Content?

Here's a good start - the actual site of Smith Micro http://www.contentparadise.com/DefaultV2.aspx
either click free stuff, or sort by price; low to high.
Not sure what you are looking for specifically. Personally, I like the Miki and Terai Yuki but you can only find dead-links on other sites. ZoneGFX.com has good working characters for just 50 points each. I did notice that Poser 11 Pro comes with tons of characters and items (they boast of 5 gigs worth) including several base characters.
There is a program called crossdresser and you can use clothing from different characters. I really haven't been successful with a render yet. I get to a point that I click something and it turns in to a pretzel. Perhaps I should modernize my ten year old laptop. I've noticed many of the .ru sites have fewer and fewer valid poser stuff links since Daz3d (pro) is free. It also seems like TopGFX has gone neglected and is directing it's users to go to 3daxis.org. I think they want to shed megaleechers (as I have been called on more than one location) Okay, if you find a good site to download older poser stuff please post it here. I think of all the sites with daz-poser content, this one (zonegfx) has the best organization and people.