You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
What random, mostly useless, thing are you surprisingly good at? (Jessica's is remembering the names of people's children. Mine is guessing when things were made.)
I just gave Jessica a kids' name test. It was kind of scary. Her friend's husband's adult children by a previous marriage, that she's never met? No problem. It's impossible to stump her, because any kid whose name she can't remember, I can't remember the existence of.
Remembering people’s faces, even from many years ago
I don’t think it’s useless, but remembering people’s birthday (even without FB).
Gamifying anything
Knowing cars make and model by glancing at any car from any angle. I'm not particularly interested in cars 
Linking any given social situation to the respective Seinfeld episode.
Mine is applying the Dilbert cartoon strip to situations. I just wish it sounded good to recite back the words of a cartoon in the middle of a discussion.
Phone numbers
Crying like a baby. As in, literally creating the sound of a baby crying. Utterly useless
I do a hilarious pseudo-Donald Duck from one side of my mouth, and excellent fart noises from the other.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.
