Unfortunately, my invitations failed too. The major reason is language barrier - my native language is not English, the same as for all my friends.
So until Steem would implement translation feature, we wouldn't get massive spreading around the World
The people around me also can handle at least simple English.
But I don't know why they ignore my invitation.
Maybe the concept is too great.
It seems like a scheme.
But for me it's a big chance.
Just like I could find bitcoin years ago.
(The fact is I couldn't.LOL)
the problem is: if you have only simple English -you cannot write long beautiful and understandable posts in English.
Else, no one would read you
Yes, you're right.
It's my situation.
I can reply but it's hard for me to write a long and understandable post.
I'm in the same boat