A better form of "reverse favorites" would be to have a list of people whose comics you hate. People who got a certain number of mentions on users' "reverse favorites" list would have their e-mail address automatically signed up for 500 billion porn-site mailing lists.
Speaking of which... Is there a limit of 50 on the search results for favorites? It seems oddly coincidental that billings, kaufman, dan, and dexx all arte on 50 people's favorites lists.
It seems to me a better solution is to do exact matching instead of fuzzy when searching for favorites. When I search for people who have me on their favorites list, the results also include people who have Big Evil Dan or Evil_Diet_Coke listed instead.