Damn Spam Scammers

I'm looking for a way to permanently ban spamming scam artists that put up their trash comments on blog posts. There doesn't appear to be a block list feature which is unfortunate. If anyone knows of a method for targeting specific abusers please let me know.

You'd think these ass-clowns would find someplace with a lot of traffic to ply their trade instead of some barely alive back-water blog like this one. This blog barely gets any traffic so where's the profit to be found by dumping spam links into comments of posts with very few lifetime views?

It's possible that the offending commenter is actually an automated bot spider randomly searching for places to lay its eggs, but you'd think the programmers would design them to find areas of high traffic. Nope, they chose to waste my time by requiring me to go in and delete their shit comments.