I&#x27;m the wrong person to answer this because I am not a social butterfly (though I&#x27;m not antisocial either by any stretch) so being up and up on everything my friends are doing is not important and consequently I only have about 40 friends in total on FB. Half of which, I could probably get rid of right now and not care.<p>1. People use it for event planning. I don&#x27;t get texts asking where I am anymore or what i&#x27;m doing. Events are organized... Personally, I despise this because I love impromptu meetups, but that&#x27;s just not how my friends do things anymore it seems.<p>2. For all non-business communication the answer is yes. Professional contact is still E-mail driven (or Slack&#x2F;IRC for dev-friends). That said, LinkedIn is starting to pickup some of the professional communication in my circles.<p>3. I&#x27;ve been okay with the trade-offs, but that decision fits my social profile. I have to make an active effort now to get invited to things though which kind of sucks, but I suppose that&#x27;s OK too since it allows me to be more selective about what I go to.