I agree advertisers are a natural customer for this site. Paying to buy steem power is a drop in the bucket for web advertisers especially for a guaranteed spot on the trending page. Interestingly I think whales will have to downvote this stuff to prevent it from taking over. Imagine if coke bought 1000 vest then made a bot to upvote every mention of coke. Then all the steemians would slip coke into all their post.