I used to really like AngelList and thought of it as a great replacement for LinkedIn, but recently they seem to be more on a track to morph into LinkedIn. Unless something has changed, and it doesn't sound like it has, almost every profile update requires an email exchange to occur. The new "who's viewed your profile" feature is eerily familiar of LinkedIn (i.e. turn your profile to private so people don't see). I hate to see them fall into the same hole as LinkedIn.
I got a notice about profile being viewed in "private mode". Then "click here to see who it was". I have the cognitive dissonance.