I was pleasantly surprised today when I reported an email as spam through Gmail and was asked if I would like Gmail to attempt to unsubscribe me from the messaging service that sent me the spam.
I even received a confirmation message seconds later telling me I was unsubscribed from the mailing list.
This was a pleasant experience from a mail provider that already provides an excellent mail service. Apparently, this has been going on for a couple of months and I only just now noticed it. I suppose that's a testament to the superb spam filtering Gmail implements.
So, rejoice fellow spam haters, we now have another spam combating tool in our arsenal.