Well I'm glad to see that media wiki has added some significant additions for
combating spam and vandalism unfortunately I can't find very many useful examples.
If found this one "count("http://", added_links) > 3"
Unfortunately it only matches more than three unique urls and what I've noticed is
that spammers usually repeat the same url many times so I want to block any edit that
repeats more than once.
I'd also like to block any user that edits more than X number of pages a minute.