There's a user called nameless making really long spammy comments on different articles. Now, he/she has low rep, so these comments are greyed out, but this isn't really enough! Take a look at this post and scroll down to the comments. They look like this...
The real comments are just blown out of the water by this spam. Now I'm sure I've seen a show/hide spammy comments button before, but I can't seem to find it now.
Has it gone? Or are these posts not flagged as spam, just greyed out because of low-rep? I'm not really sure what's going on.