1. A reward for bringing in new people is that you can almost always get them to follow you. Followers are the ones who will consistently upvote your content, and do it early, increasing its exposure to non-followers. They are money in the bank.

2. As the network grows the coin price must scale to maintain the value of payouts. Social networks tend to be worth a lot of money, so this shouldn't be an issue long term.

3. Steemit.com is a website that pulls content from the cloud (Steemit blockchain) and formats it to resemble Reddit/Medium. There are other 3rd party websites/apps that are working to present the content differently. Think twitter, insta, message boards... Check out Steem Tools

The Steemit blockchain and the STEEM coin will power a whole ecosystem of apps and websites.