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
Startup idea: Human-friendly checksums when talking over the phone. After saying your name/address/email aloud, enter its 4-digit checksum via dialtones so the other party can confirm. Unfortunately this would require solving a fairly large chicken-and-egg problem.
An error-correcting code would be even better (no more "*N* as in *Nancy*") but might be too long. Also, entering via dialtones is crucial, because you *really* don't want to risk having transcription errors in the checksum too.
Actually, adoption might not be too hard: Businesses could start offering support for entering a checksum *if you have one*, and otherwise confirming the usual way. Of course, in a few years there will be no more humans speaking over the phone anyway, just Google Duplex AIs :P
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.
