How can that be legal? Or ethical? Maybe there is a thin line between journalism reporting the “news”, but internal documents was stolen and providing fuel for TechCrunch’s revenues (now I am capitalist and entrepreneur, so there is no wrong in making money, but stolen goods is not ok).
The statement; “News is what somebody somewhere wants to suppress; all the rest is advertising,” kind of falls flat when journalists live of advertising.
Besides, Twitter is a private company, held be a very private group. For public companies, journalists have a responsibility to uncover certain things, to the public (and thus their shareholders), but not for private companies.
Now if those documents would prove that Twitter was doing something illegal or unethical that would be a different story, but this is internal strategies, meetings etc, it’s the company counterpart of somebody taking your diary and publishing the juicy parts on the Internet.