beyond URL's Rated 5 out of 5 stars
Great work, Jonah! If possible though, please add the ability to filter for email addresses in bulk.
Just today I found myself wishing I could copy all of the email addresses on a webpage (and nothing else but that, with a *@*.* filter maybe, or even *.*@*.*) Oh, and ideally you'd also be able to automatically append each address with a comma and a space (so that, yes, the whole lot of them could immediately be pasted into the Recipient field of a new email message).