[sebastialonso]

I've welcome Uber's business plan. Ads are not the answer for everything. Quite the contrary, I'd argue that ads are the answer for very few problems.

Money or any monetary transactions plays two roles in these kind of business. The unrecognized one is that it plays the role of guarantee (ideally, but in reality is something like 'more or less'). What guarantee do I have as a driver or as a client if I use an ad-supported billing system, which we all know is next to crap? This is a really poorly-thought idea. Uber's strength is in the elegance of its business model.