I have a serial scumbag commenter, named Telaat. I have noticed his spam comments on other blogs too.
Telaat, you are a fucking moron. Comment spam does not affect your PageRank. Stop leaving comments that are instantly deleted. It does NOTHING for you. From Blogger help:
All links will automagically use the rel="nofollow" tag, so they'll receive no PageRank boost.
Stop wasting your time, and everyone elses, you moron.