Google knows what you mean.

Some people use Google to check spelling, others make typos, either way, Google has a way of righting our wrongs. Google Did You Mean? promotes the use of Adwords in a clever way - Jetlag is presented as Jetleg, Battleship as Battlesheep, and Astronaut as Astronut. (Especially digging the Battlesheep). Nice Ad campaign by Grey Turkey.