I changed ad-html.tcl to parse adp pages before stuffing them in the DB, so that it would find the regular body tags and insert the comments and links. That's how our site is running. However, those changes did not make in the CVS tree because we didn't want to branch off from aD's tree. I can make a patch and post it here, but it'll have to wait until tomorrow or saturday.
2) That's Don area
3) Yes, search engines acn index ADPs. They only have problems with pages with ? and &, because they think they are CGI scripts or something. Go to Yahoo and search for "free linux" and our site will come up in first.
4) I use ADPs 99% of the time. They are much wore flexible and save me typing (which is a healthy thing).