A few years ago VH1 had a show on called Webjunk2.0 or something like that. The show featured some comedian host and played funny videos form Youtube or Ifilm. It was OK except for the fact that most of the videos were about 2 years old. After a while I didn't see it on VH1 anymore (they must have need more room for their dating show spin offs and the thousands of I Love every decade shows they got now).
("see its funny cause he's white")
Now all the sudden we got a bunch of these web TV shows coming on air. MTV has DJ & The Fro, which features two flash cartoon charters watching online videos and mocking the people in them (with some "comic" antis in between). Comedy Central got Tosh.O and G4 has Web Soup.
("Its funny cause there old!")
Now these type of shows would seem like a great idea if this was the mid 90s when not everyone had access to a computer, and the internet was still pretty new. While there are still people out there who don't own a PC/Mac, a large majority of the population around the world do have access to not just a computer, but to the world wide web.
("Its funny cause, wait didn't MTV use to play music videos?" "Music wha?")
One reason for the sudden boost in these web shows could be due to the economic hardship going on. The cost to on these shows must be dirt cheap for the networks. They don't need too many writers for a show featuring a guy mocking the kid who sang Chocolate Rain. Not to meantion the millions of videos online that don't have any copyright to pay for.
The only other reason I could think of is that there trying to get back some viewers who now spend there TV time on the web. This is probably the least likely reason since the networks have put so much into the website hulu.
I'm not sure how long these shows will last, but I have a feeling will be seeing even more of these show while the TV networks do what they can to stop the decreasing number of viewers.