Signing up seems a bit .. shady. There's 2 methods:
- The Streemian Unlock app: doesn't work
- The Steem JS Auth App: asks for master/active key, while a posting key should suffice
Probably nothing shady, but I will never give my active key to any developer platform other than Steemit itself.
Ok, I didn't try it further than registering. I'll check the next days.. Let you know..
Not a good idea to share an active key..