What info are they sharing and to who?

So, I was curious if there is a list of various sites/platforms blizzard sells/releases user data to and what data they sell/release? I am not paranoid about it but was interested to find Facebook gets info from them about my activities albeit not as often as wowhead and wowpedia. The only reason I even noticed it is I was checking all my various site settings after my phone number got sold and I ended up with over 200 calls in 4 hours and seen that they have given info to Facebook a several occasions.