A question appeared on Community Server Forums that I've seen before asking how to delete temporary users, forums and other CS objects created while testing a new site. The simple answer is that there is no user or data purge script to remove data created while setting up a new CS site. User deletion was added in Community Server 2.1. The user's data is not deleted however, and authorship is transferred to the anonymous user. Personally I think this is a good policy.
If we wanted to remove a dummy user's forum posts, we could mass copy them to the Deleted Posts forum, then purge from there. For Files, Photos and Blogs we can simply delete those objects, no one will ever see the data and they will by no means affect system performance. Or we could run a SQL script, sure.
So I was thinking (NUGLET!), why not take a database snapshot prior to mucking up a pristine Community Server database with a lot of test data, then restoring the database when testing is complete? Hey, it's an option.