It is trully awesome to see all the interactions growing with people on Steemit. I really think this is unique for social media. At least I haven;t experienced anything like this before. It's all about receiving by giving!
I want a Steemit shirt myself! I think that would raise even more questions from people around me. Questions That I happily will try to answer!
I really want one, I was major gutted to have missed getting one at steemfest!
You are right though, I have never experience anything like this anywhere else. The most you could have hoped for by giving your address out would be getting attacked by strangers!!