The value of the 10,000 Bitcoin pizza.
Bitcoin Pizza is a Twitter bot created by Merijn Bellekom that averages the current Bitcoin value, and tweets the value of the first real-world Bitcoin transaction by Laszlo Hanyecz when he bought pizza with 10,000 Bitcoins.
[The bot posts] at 3:14 because pie.
The value of Bitcoin fluctuates wildly, so this tweeted value will too. A 1-day change indicator is included, and a special message is added on the anniversary of the original transaction (May 22nd).