Yep - details in the wiki link :-)<p>In fact, we even get a quantification of the potential &#x27;value&#x27;  of the billboards (to the advertisers,  at least) :<p>JCDecaux paid the scheme&#x27;s start-up costs, totalling about $140 million, and employs around 285 people full-time to operate the system and repair the bikes on a ten-year contract. The city receives all revenue from the programme, as well as a fee of about $4.3 million a year. In return, JCDecaux receives exclusive control over 1,628 city-owned billboards; the city receives about half of that advertising space at no charge for public-interest advertising