It's been a while since I came on here. I came to announce my latest polychoron website update, the largest update yet, with lots of new content including a page with 4-D dice up to 20 sides, slices of all 222 uniform polytwisters, more categories filled in with vertex figures on them, a glossary, and lower dimensional pages. Enjoy:
http://www.polytope.net/hedrondude/polychora.htm.
Whale Kumtu Dedge Ungol.