I've just rejected an edit on the answer that was made by some anonymous user. Anonymous user? Who have the right to make an edit and not even be logged in? Am I right that rejected it?
Anyone can propose edits, but if you have less that 1000 reputation* you need a moderator to approve the edit, to prevent spam and what not.
In this case I don't agree, the edit looks like it improves the answer. Just because it is an anonymous user does not make it wrong.
Stranger still it looks like the edit has been approved anyway
*Once the site leaves beta this number will change to 2000