Okay! I had to look! It is based on upvotes! Checked in the FAQ! Lol
How do I improve my reputation score?
Every time another user upvotes one of your posts or comments, it increases your reputation score. Users with a higher reputation than you will have more of a positive effect. The more STEEM Power that the voter has, the larger the effect is as well. The best way to earn upvotes is by adding value to the Steemit community.
Cool! Thanks for the information.