When you join, after you have done 50 posts, you get 1 power and 1 green bar. After that, the post counts increase, and it's different for everyone. You only have 36 posts, so people must have repped you to increase your green bars, but they won't kick in until you reach 50 posts..
Every time you get a green bar, the phrase changes: mine says "blue ladybug is respected by all as a sound brother/sister"..