Unlimited WiFi Access at Starbucks?

Starbucks has announced is now they're offering unlimited WiFi.  But...but...but...now, you get free WiFi for 2 hours.  Is that not sufficient?  Are there people who go to Starbucks and hang there all day.  To answer my own question - yeah - I'm sure there are, but this cowboy ain't one of them.  Probably the most that I've ever used up of my 2h allotment is perhaps 30min or so.

It would be nice I suppose, but certainly can't imagine that this is something that the vast majority of their customers will find useful.