Your handy translation
"This research was conducted for a single week in 2012 and none of the data used was associated with a specific person’s Facebook account."
We're not telling anyone who we messed with. Including them. So that's ok.
"We do research to improve our services and to make the content people see on Facebook as relevant and engaging as possible. A big part of this is understanding how people respond to different types of content, whether it’s positive or negative in tone, news from friends, or information from pages they follow. "
This is an important step in determining how to make our cattle happy and most likely to click the adverts provider by our users. The cattle will eat whatever they're fed.
"We carefully consider what research we do and have a strong internal review process."
We consider carefully if the research is in our interests and if there's money to be made. No, we're not sharing how we decided. We're very comfortable about this, so what's the problem?
There is no unnecessary collection of people’s data in connection with these research initiatives "
We decide what's necessary.
"and all data is stored securely."
It's our data, isn't it? So you can bet it's secure. The sooner you get this into your thick heads the quicker this discussion will be over.