Sort:  

Steem will give you a "curator" award for participating in posts by upvoting or commenting. It's not as much as the reward for being the author of the post, but it's something. Think of it this way, the post would never reach popularity if people didn't upvote it, so it's only fair that the curators get something back to stimulate the Steem economy.

Ok, thank you for a good reply

You're welcome my friend!