Anybody heard of the fly-paper trap?
Where all the flies are collected, in an unsightly mess, hanging from the kitchen ceiling. The expensive version is the lizard with a long tongue, that retracts after each catch.
Take an uncensored version of a usenet newsgroup, show the subject line of each thread header, with the total number of postings and the net number of postings after extracts. Put the total number of extracts, in the first line, at the top of the list of postings. Anyone wishing to search the extracts clicks on it and finds each person extracted with 2 lines each. The first line shows the number of thread headers and the second the number of replies. Further clicks go down to posting level.
Extract everyone with more than 1000 postings on any single newsgroup, from all newsgroups.
Examples of the fly-paper trap can be found on:-