I am posting this here because it may of interest to those who have sites based on TheBeerHouse. Since TheBeerHouse uses anonymous identification, this is an issue that would affect TheBeerHouse and any sites which are based on it:
I posted about the issue of anonymous user records and database bloat some time back. This blog post goes into a lot more detail, and offers a convenient solution you can easily incorporate into your site to handle expired anonymous user records. Enjoy.