More suggestions from Steemit chat:

Taking a read through the doc -- regarding is Steemit a scam, I think we could add a line about "When you sell your Steemit dollars/ Steem another individual is buying a piece (or stock) in Steemit as a whole." I think that gives a little bit more context personally.

The hole thing about "Voting Power" i would write it kind of differently.
i would do it like this.
What is Voting Power?
It’s the worth of a single upvvote. It’s determined out of your Steem Power. More Steem Power means a higher vote weighting.

How is the value of a user’s vote calculated?
An example: If your vote is worth $0.02 on a new post, it’s worth about $0.45 on a post already worth $250, or several dollars if the post is already worth $1000s.
To find out how much your vote is worth, check out this tool:
http://steemdollar.com/dollar_per_vote.php?name=

Can I vote as much as I want?
No, your voting power percentage (vote worth) will decrease with each vote and regenerate over time. It will regenerate form 0% in 5 days. Keeping your total number of votes in the 20-40per day, range will maximize your voting power.

How I should use my Voting Power?
You should only upvote quality content and things you like.