I was going to come in to post this. Regular expressions are the first thing I think of when it comes to this, and making a pattern to match [AT] instead of @

I was going to come in to post this. Regular expressions are the first thing I think of when it comes to this, and making a pattern to match [AT] instead of @ is just a few keystrokes away. Make up a few permutations of popular replacements and you've just defeated 90% of email obfuscation in 15 minutes. And yet I see seasoned programmers who should ostensibly know a little about regex using this kind of obfuscation all the time!