Thankfully MSNBC has attempted to break it down:
The deal is with the company behind a mobile communication application, Line2, which allows inflight texting on Wi-Fi equipped planes.
Peter Sisson, CEO of Toktumi, the company behind the application, called Slater 'a perfect judge for a contest concerning the current state of air travel.
After talking with Steven, I realized that despite his dramatic approach — which he regrets — he was making a statement about the need to return civility and common courtesy to flying.
The 'Mile High Text Club' pushes the cause of communicating via text on a flight so other passengers are not disturbed by loud voice calls.
Oh well, that didn't explain much. At least for now we don't have to understand this "Line2" thing; the point of the story is that Steven Slater has found another job even though he's probably the last employee any company but a promotional one would want to hire.