Been playing this alot over the free weekend, its amazing and I am tempted to buy it.. I just want to know something before I do and that is about how active people are playing this game... Is it highly played? I'd probably want to get into it competitively too, so whats it like in terms of clans/teams?
It is very highly played. I assume you want to play on PC. With my mmr (which is about average) I can solo-queue into quick play in about 10 seconds.
If you want to play competitive in teams, it's gonna be a bit harder. Probably search for people on Reddit or another very active forum to form a group and get to know your roles.
Being a Blizzard game, OW is by far one of the most actively played FPS' on PC. You can log on at any time and queue for a game and get in within thirty seconds, a minute at most.