I just want to mention this quickly, since I found it rather difficult to find this information on the web: if you are having trouble importing posts from facebook into NVivo10, this is probably because you are trying to capture your newsstream. In that case you will only get the option to import the webpage as a pdf, but not as a dataset.
What’s the solution? Well, the “solution” is simply that “NCapture does not capture posts from your News Feed—you need to navigate to wall posts for a User, Page or Group.” This is what it says in the NVivo help. There you go.