Like Facebook, Twitter has offered location tagging for a little while now. That's why there's a little pin icon in your Compose screen that lets you attach that all-important information. Now, the iOS and Android apps will suggest a list of places you could be at and attach the name, Yelp rating and other bits of relevant information to your tweets for your friends to digest.

Yelp says its enhanced location tagging is mobile-only at first, with Twitter.com getting the feature "soon." While it's likely to make it easier for users to interact with people who happen to be at the same place at the same time, it'll be brands and advertisers who will gain the most from all of this extra metadata. They'll get to know more about the people visiting their business without having to do any of the legwork.