I had a couple, both on posts I made to communities , one from 2006 the other from 2003. They can't spam most of my journal because it's friends only.
The email notification has what appears to be a you tube link in it --- I don't know what the link is too, I haven't followed it. The link photo is of a page of text.
Neither of the spammers appears to have an LJ account -- or at least LJ couldn't find one. Nor do either of the comments appear in the comments to the posts.