It looks like the second is a mindless serial adder, so don't even worry about that. You can ban them if their name on your userinfo page bothers you. Look it up in the LJ FAQ section, j0?
As for the first, I don't know much about. It's been suspended, so I can only assume they've been up to no good.
Back to the original subject, I wasn't meaning anybody in paticular, just in general.