Recently active topics in PBwiki tagged with comment

Instead of allowing my team to edit pages, I want to allow my folks to comment on a page...then have administrators get an email or RSS alert that there is a new comment.

Is there anyway to get notifications when comments are made??

I'm using (and loving 2.0)

A couple people whom I've invited to my closed wiki are reporting that they were not able to edit a wiki page - they got an error of some kind - but were able to post comments. Have I done something wrong with the invite, or the wiki?

I want to be able to delete selected comments on my wiki pages. Is that possible? How do I do it?