FEATURES:

The First Feature Is That You Will See A Voting Power Indicator On Top Of The Page (On Right Side Of Your Reputation) With Which You Can See Your Your Voting Power And How Much SBD It Makes!
Down To The Voting Power Indicator You Will See That How Much Upvotes You Made Today!
A New Tab "Votes" Will Be Also Created With Which You Can See To Whom You Upvoted And Who Upvoted Your Posts Easily. It Also Shows That What Was The Prize Of That Upvote Too!.
On The Right Hand Side You Will See A New Menu Item Added With Which You Can Go To The External Useful Tools. Like Steemd.com, SteemDB.com, Steem Tracked, Steem Followers And More!
When you click upvote and the Vote Weight slider appears, not only you see the percentage of the vote, but you also see the amount in $ that upvote will be valued.

For downvotes, it shows also the total reward of the post after your downvote

You Can Change The Layout Of The Complete Page!

On The Blog Page You Can See A Full Chart Of The Posts User Made. Resteems Are Shown In Green.
The followers and following pages will be updated, You Can See How Much He/She Upvoted To You And How Much His/Here Upvotes Worth In $ And Powers....
You Can Disable Or Enable These Features In Settings Tab.

Privacy - Do I steal your data?

I do not access your private keys. The only way I could do it, is if you go to your wallet page and click on "show private key". But I don't do it!
Should you trust me? Well, I believe is better not to trust anyone. That's why the source code of the extension is available on github and you can (and you are encourage to) look and study it!The way it works is by scraping the webpage and the url of the page you are looking at to extract your username and the username of the user you are looking at. Then it uses steem-js to get informations about that user.
This process doesn't involve any private key! In fact, you can see informations of other users as well, even if you obbiuvsly don't know their private keys. ----- @armandocat