McCaleb saw the Slashdot post, tried and failed to buy some bitcoins, and thought an exchange would be a good idea. (Early Bitcoin core developer Martti Malmi had an exchange site, but it wasn’t very usable.96) He had run the “Magic: The Gathering Online Exchange,” a trading site for an online card game, for a few months in 2007, using the domain name mtgox.com;97 he quickly wrote some exchange software in PHP and reused the name because his girlfriend liked it.
