I taught my friend how to use regular expressions for search and replace. He's found them invaluable and he's NOT a developer. He uses then to clean up and filt

I taught my friend how to use regular expressions for search and replace. He's found them invaluable and he's NOT a developer. He uses then to clean up and filter lists of keywords from Adwords. I reach for refex frequently but almost never as something I add to the code I'm writing. They're just amazing for filtering and bulk editing text.