This thread is a great revelation in forum hyperbole to me. The outrage at the pricing is puzzling and I guess it's because of a misconception about what the service is about.
Bixi have been in Montreal for a couple of years now and as the other Montrealers have said, it's a huge success. It's part of life in Montreal now. Good luck trying to find a bike during rush hour!
The idea is not to rent a bike for the day. The idea is to speed up short commutes between two points. For example, to replace a short taxi ride with a short bike ride, replace a commute that's depdendent on a rigid and unreliable bus schedule with a flexible (as in available now) bike ride, enjoy the summer weather, cram a little exercice in your daily grind.
In those scenarios, which are a good part of city living, it's perfect and it's competitive, price wise. If you need more than 45 minutes to bike from A to B, chances are a taxi, the bus or the subway are better and faster alternatives. Hence, the fact it's free for the first 30-45 minutes is plenty enough.
From personnal experience, the service is great. For example, getting from any interesting place (bars, restaurants, etc.) to my place is roughly 15 - 20$ by cab, I can cover the same distance by bike for half that. Let me tel you, there's nothing better than cruising the city at the wee hours of the night after a night out. Other scenarios are traveling between the subway station and work; much faster than walking.
I don't know how it fits in a city like Fort Lauderdale, but in a tight city like Montreal, it's perfect and now indispensable.