Quote Originally Posted by Eye_Gore View Post
SE already does this, as we can see how well it works. Thats why there are so many variations in the spam messages.
Maybe SE had some filters in place at one time, but considering I've seen messages lately that have a straight web address in them, such as www.whatever.com, with no attempt to mask the fact that it's a web address, well, I have come to believe that for whatever reason SE removed the filters at some point.