There are a total of 57 random events in GTA V (60 in the enhanced version), and completing any 14 of these contribute towards 100% Completion.
They start to become available after the mission Complications.
I've used this app off and on for months now, basically whenever I'm bored and want to talk to some new people. Happy jacking cam kids I like this app it's a fun way to meet new people but I just really hate how we have to pay just so we can talk to some of the same people.
They're all on the social life topic, with pieces of advice that work both here on Stranger Meetup and in real life.