So the twitter of steemit is here!
www.zappl.com
It is working, and you can use your Steemit account to upvote! Just sign in with your steemit ID and posting key located in your wallet permissions tab.
I have tried it, and it is working great! Just a little bit slow.
Another issue when posting on Zappl is that your post also gets posted on your Steemit page! This is the post that showed up without my intention (Edited).
Check out my previous posts:
Soundcloud of Steemit: [Here](www.steemit.com/dsound/@jefft/steem-s-soundcloud-is-here)
Youtube of Steemit: [Here](www.steemit.com/dtube/@jefft/steem-s-youtube-is-here-dtube)