Youtube implements new IP feature that smacks of greed IMHO (some vids embedded)...
So I'm an avid YouTube watcher. Specifically I tend to watch a lot of YouTube "Let's Players". These are people who play video games while commentating. If you have no experience with it, it may sound boring, why would you want to watch someone else play video games? But it's actually quite entertaining. Here's an example:
Watch a few mins of this, the guy is quite humours and entertaining.
Another example is people who review video games. They take a game that has been released, record footage of it and edit it together into a review, a lot of work goes into some of these reviews:
Trouble is they don't technically own the rights to the video footage or music they have recorded, even if all the other content they create around it is their own.
Believe it or not quite a few of these people actually do this full time! Youtube partners with video content producers and offers them a percentage of the add revenue from the adds they place at the beginning of all videos. If you have a large enough user base watching your shows this can be enough revenue to make a small living off of. Some of these guys have 200,000 to a million or more subscribers and regular viewers. Now of course the big companies don't like this. You are making money partially off of their content, and they are not getting a piece of the action. So over the years they have been pushing Youtube to make it easier to make Copy write claims on videos. Well the other day Google caved and implemented a feature that made it MUCH easier for large corporations to blanket flag large numbers of videos and make copy write claims on them. They get a share of the profit or you take the video down!
As it is most of these small content producers don't make a huge amount of money off these vids, only the top few % are making a really good living off it. The vast majority of the rest do it as a passion project and are lucky they can make a small living off it. They really can't afford to have this happen and still make a living doing this. And believe me if you watch enough of these shows you come to realize quickly it's not just people lazily playing games and making a buck, these guys put a LOT of effort into these things. The amount of editing, writing, and general production values involved is indeed a full time job for many.
Now the most legitimate concern Sony, Nintendo, MS and many others have is that a small number of people are actually uploading whole movies, songs, TV shows etc. BUT what has happened is that these companies have used this tool to blanket flag ANYTHING that has any of their content in it at all. Have an amazingly artistic video that is all yours, you spend months and months working on that happens to contain a few mins of some Beatles song? Expect to get an email about it now!
The Youtube community is in an uproar about this right now and many fear they will be forced to stop doing the work they love so much. Here is one impassioned plea by a well known vlogger:
= new reply since forum marked as read
I like a small proportion of the let's play community 
Yes I agree there is a lot of junk let's platy stuff out there. But a small subset is really quite entertaining. Did you watch a few mins of the first vid I posted?
Actually now that I look at my subscription list only about 3 or 4 of the guys are let's players. The rest tend to be video game review shows. I think what I like more than anything are the personalities, a few of these guys are really quite interesting 
BTW only tangentially related but do you know of Smooth McGroove? If you like game music this guy does some awesome acapella stuff:
http://www.youtube.com/channel/UCJvBEEqTaLaKclbCPgIjBSQ
