Social Media has been used as a buzz word recently as opposed to a communication platform. Brands decide using the platform need to think thoroughly in terms of meeting rules and regulations; as well as complying with code of ethics. Campaigns can get more sophisticated when brands decide to apply some kind of Social elements into their strategy; brands need to take a bit more care of their brand in such circumstances.
There are more and more outdoor advertising campaigns have Twitter and Facebook icons printed right at the bottom of ads, but not many have the handle or the page name next to them; simply because of ignoring user experience. Anyway, it is difficult to see and remember the social elements while driving or travelling by public transport; unless one is in a traffic jam. It seems advertisers just do this for the sake of calling their campaign social integration.
Needless to say, such level of integration can work for some types of outdoor campaigns, such as ads in buses and tubes; but not billboards in high roads and bridges or even train stations. It is also important to remember the age restriction on certain social channels as well as advertising regulations in certain countries.
One prime example of not so strategically use of social elements in outdoor advertising campaign is Budweiser in the UK; they cited “over 18s only” next to the Facebook logo (which presumably is their brand Facebook page). In a glance, their effort can be seen as responsible, but it is rather irresponsible in other ways. For instance, we all know there are many under 18s on Facebook pretending to be over 18; they can easily take part in any competitions or promotions by the brand (with no real control on who is really over 18!). Or does Budweiser hired a team to manually check age of every single individual liked their Facebook page?

It is appreciated that some may suggest people should be responsible and act responsibly and some would question Budweiser’s sense of responsibility and their consideration of ethics. Budweiser however, would argue that they did their little bit; which would possibly let them get away with the law – but not social responsibility and ethics.
Obviously change is inevitable in some organisations to really master BSP.