wow so i just discovered this site

After sifting through here for a bit, i have A LOT of questions!
1. Should i put all my social media on private? i didn't know sororities looked at that stuff
2. The person below was joking but i actually am black and a little nervous. My mom wanted me to join a multicultural but i've been wanting to be in a movie-type sorority for forever. Will sororities stereotype me at all..? Also, do looks matter a lot?
3. What's the deal with zeta? And apparently another sorority is coming next year too?!?!