Hi Rip,
I have modified Blog Display to show the most commented blog postings and the most popular blog postings. I created two seperate Blog Display modules called Blog Comment and Blog Popular and wrapped them in the SLS Tab Zone. I still have some work to do on the formatting of the wrapper but you can see it at www.politediscourse.com.
The "most popular" links to the sitelog table that I had to modify by adding a column called PopEntryID and modifying the AddSiteLog stored procedure to search for the appropriate string from the Url column. Obviously, most popular only works properly when blog entries are set so that one must click on the entry to read the whole post.
I'll package these mods and send them to you early next week. Oh, I really like the BlogDisplay module. Great job.