Just a note on how I deal with spam comments: I leave them in place, and remove the URL link. (Yes, I can do that. I am all-powerful.) I also include the words "is spam" after their name so that you can be amused by how clueless they appear.
This is only for the ones that break through my spam control, which is apparently pretty tight: I don't get too many. But I figure if someone went to all that trouble to compose a comment that has some tangential bearing on the topic being discussed, the least I can do is leave it there.
No, not really. I'm actually just a bit sadistic and I like messing with their minds.