You probably havn't noticed as I was keeping on top of it most days but my blog has been suffering from a bad case on Blog Spam. I have been deleting the spam everyday for the last month or 2 since it started. Well good news, I upgraded to Blogsphere V2.5.5 a couple of days ago and one of the fixes/enhancements was improvements to how it handles spam. It seems to be working great, not a single spam since the upgrade. Well done to the blogsphere team.