I just removed 49 splogs, and at least as many spam accounts from UCalgaryBlogs.ca - the funny/annoying part is that the scripts used by these cretins doesn't grok the private/public checkbox on the registration form, so they were all marked as Private and Google hadn't crawled a single one of them.
UCalgaryBlogs.ca now requires a valid ucalgary.ca email address to create a blog site. Once a site is created, you can add anyone to it, with any email address. But the spam blogs should hopefully be gone.