what is it chainBB.com

what is the function with chainbb.com
after I sign in I do not understand here only I can see the post @jesta as below picture.

I don't understand what the benefits of his chainbb.com this
after I read the post @jesta.
still I do not understand about what this information is already late I know, and it looks like this is already in the cap.
but I'm still curious what's in tell me about what here I am still very curious with this.
for those who understand please give and explain me what chainbb this and I really hope if this make the information important, although it's too late this information I know I will learn it until I understand about chainbb this , what is this a steem connect or a tool to steemit.