Hello mayordomo.
I write a Steemit service project. You can participate in a beta test if you reply to this message with a either "@username" or "?username". Replace "username" with any one steemer username and add nothing else to the reply. And @ and ? do something different. Only ever second username will work at the momemt, though, you you may try two names.
Thanks!
PS if you like it, give me feedback on what to imporove.