http://www.blogwise.com/stats/spammiest
Of the blog domains out there from which over 100 blogs have been submitted to Blogwise, tblog.com comes out top of the spam list. 15.35% of blogs on tblog.com have been rejected as spam, compared to 5% on Blogspot (which is usually cited as a fairly spammy domain).
It’s an interesting stat – but one where I’ve been very keen to emphasise how the results should be treated. It’s not a recommendation for or against any particular domain, nor are the stats used to effectively prejudice against blogs that come from ‘spammy’ host.