At least these things have serial numbers to key off of.pic.twitter.com/YKqJmkS1Oe
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
As far as I know it's still used by default for serial ports on several distros.
oh, you mean the name, not the protocol
Well yeah :P AFAIK historically UUCP ran over serial lines and modems, hence the usage. UUCP is dead but the group name remains.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.