A standard confirmation email from JetBlue, that I imagine gets sent to many people every day, contains the typo 'atjetblue.com' instead of 'at jetblue.com' - not surprisingly, the domain atjetblue.com is a page of ads. I want to get me some of that vector!
"per person plus applicable fare adjustment. Save $5 by changing or canceling your flight online atjetblue.com. Any remaining balance will be placed in a JetBlue air-only credit and may be applied toward future travel"
If you have anything from JetBlue on your email, take a look!