e-mileage
When you get an awesome email and you send it to your friends, who send it to their friends, and it feels like you're in a never-ending email hell.
That email about a free vacation is now haunting my friends and their friends.
I got an email about a free car and now my whole class is obsessed with it.
This email about winning a million dollars is now going around like it's the best thing since sliced bread.