The petition reads:
To: Apple Inc.
We all love your products, Apple Inc.! But your recently refreshed line of consumer notebooks lacks the possibility to plug in digital audio and video equipment as well as fast mass storage devices. Therefore, we pledge to purchase a new MacBook or MacBook Air if you, the inventor of FireWire technology, would be so kind to bring back FireWire ports to those products.
So far 8849 signatures have been collected. You can add yours here