The true story behind Angry Birds

Once upon a time, Google set up an online advertising program called AdWords.

Then along came another online advertising program called ... AdBirds. I kid you not.

One of these continues to hog the major share of online advertising. This makes the other one considerably annoyed.

Hence... Angry Birds!

Dear xyz, Sincerely, yzx

Someone posted this on the web:

Dear Two Birds,
I am coming for you.
Sincerely,
One Stone

11-year-old YS promptly came up with this new version:

Dear Two Pigs,
We are coming for you.
Sincerely,
The Angry Birds

Hee hee hee! Thanks, YS!