The City Blocks set is amazing. I salute you on the level of detail and the time you put into it. Though I haven't purchased any of them yet (and I stress YET), I love browsing through the pages and admiring how much work you've put into them. I've used Poser since 1998, and this is quite possibly the largest and most-detailed set that I've ever seen.

 As for the abbreviations used earlier: IDL means Indirect Light (which should actually be IL, since Indirect is one word, not two, and acronyms/abbreviations can only reference whole words or hyphenated words), and AO is Ambient Occlusion. SSS is Sub-Surface Scattering.