There is a new method used to calculate the least and most intrusive social media. The social media that collects personal data most might surprise you; I said might.
Jesus - they don't even name the report so interested people can search for it. Lame.
Also, least-intrusive doesn't mean most-trustworthy. Just don't use any of them or, if you do, be sure to take all steps at your disposal to not give any personal information to them.