Here's our original announcement: https://steemit.com/steemit/@teambitwala/bitwala-is-now-accepting-steem
The following sentence sounds a little confusing: "One of the key features of Steem is that Bitwala users can change their Steem into Steem power and use that power to vote on posts they like." That's true for every steemit user, and is not really something unique to Bitwala. Just to clarify.