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Maybe someone could build steemless.com for the homeless without phones and internet.
The more i think about it the more i'm convinced that we should put more brainpower in this. It would be a real accomplishment if we could figure out a way to get people on here that nobody would expect.

I totally agree with this... But how can we do that?

write more articles about it?
make technology available to people that are left behind by society.
create open wifi networks
Make steemit better so that people don't need a phonenumber/smartphone to be able to take part.
Look what obstacles exist and think of ways to get rid of those.

make this list bigger, more articles, find homeless people who want to give this a try.

etc.

What can you think of? Just give it a go. Write it, try it. Even if you fail then you at least know what didn't work. Share the results, try someting new.

Be the creative human that you are. :-)