Trusting R Murdoch to look ater your financial interests - it's a bit like asking Myra Hindley in to do the babysitting.

That said, I doubt that it would mater much exactly which big business owned the site. Anyone who imposes a dodgy contract does not do so for the benefit of the unwary possible victims.
I seem to recall that a few years back a lot of mudcatters had music on a site called MP3.com and were fairly happy for a while until the bosses of the firm started messing them about in favour of people they thought they could make big cash from exploiting. The result was lawsuits and finally the web site closing down. The name was then bought by some other firm and used for diferent purposes.
I'm not sure how much overlap the problems with myspace and MP3.com might have, but as soon as somebody thinks that they can make a swift buck, make sure that they don't have a contract which makes it legal at your expense.
Quack!
GtD.