Cultural Inversion

Cultural inversion refers to the switch from the communities in the outside world to the communities over the internet. It is the collapse of normal social life, in where the internet's communities such as facebook, msn, twitter and myspace take over. It is also the idea that while someone is alone in their house on their computer, they are actually only a click away from talking to anyone. Its is kind of the opposite of the phrase "so close and yet so far".

Mash-ups
A video mash-up is the combination of multiple sources of video—which usually have no relation with each other—into a derivative work, often lampooning its component sources or another text. Many mash-up videos are humorous movie trailer parodies, a later genre of mash-ups gaining much popularity. To the extent that mash-ups are 'trans formative' of original content, they may find protection from copyright claims under the "fair use doctrine of copyright law."

Parodies
A parody (also called send-up, spoof or lampoon), in contemporary usage, is a work created to mock, comment on, or make fun at an original work, its subject, author, style, or some other target, by means of humorous, satiric or ironic imitation. As the literary theorist Linda Hutcheon puts it, "parody is imitation, not always at the expense of the parodied text." Another critic, Simon Dentith defines parody as "any cultural practice which provides a relatively polemical allusive imitation of another cultural production or practice." Often, the most satisfying element of a good parody is seeing others mistake it for the genuine article.

Participation videos:
The public are involved
This is also commercial media exploiting Youtube, as T-Mobile has it's own channel and know that people will want to see their adverts as they are different.