Wow, these Google developers are really going to town lately on GMail. I recently wrote about merging contacts and multiple inboxes, and now Gmail has a new optional "Location in Signature" feature which automatically appends your location as a signature to your emails. Not as useful as the last two items, but pretty cool nonetheless.
I wonder if this is part of some internal push at Google to build up GMail. Regardless, I promise this isn't going to turn into a blog about Gmail.