A year ago I asked Chad if DynaBlocks was his BlockExtender. His answer was no.
What was he going to say: "Yes those bloody bast*rds over at Autodesk stole my idea, oh wait, I did use their C++ libraries which I had to sign an agreement to get which stated blah, blah, blah.
I guess your right; if Autodesk did buy ODCL they'd just bury it!
I'm gonna go over a browse the dot net forum now . . ..