I will no longer publish any blog comments with a hotlink in the body of the comment for two reasons.
1. The latest tactic is to write longer comments that are honestly relevant to the blog post topic which agree with the blogger's opinion, including why. There is usually a believable compliment there, nothing over the top or suspicious. But then the link provided is a commercial business sometimes that sells the product or thing that the blog post was against.
2. The link I clicked today to check out before approving the comment led me to a commercial site on the blog post's comment but then an attempt to automatically download malware or spyware onto my PC began.
1. Some of the blog posts being spammed are years old but are relevant topics.
2. The link is inside the body of the comment rather than showing up as a link via the google account such as linking to go to another personal blog.
Note on Anonymous Comments
I don't accept anonymous comments as they are most often just spam or even llinks to pornographic or child porn sites, and the rest are just cowards who want to write a rude comment and are too scared to link it to some real account they hold with google or using OpenID.