Forgive me for being rather curt and blunt but... have you showed other people who aren't your friends?
Yep I have, though I haven't done any real marketing. Over the past few months I've come to realize that's one of my real hurdles - marketing is just not one of my skills. I'm not sure where to begin with it, though I plan on learning.
I mostly share on sites like this, reddit, and forrst. Next week I'm going to be presenting Whoops in a lightning talk to a local Ruby group, which isn't something I've done in awhile and which I'm very mentally resistant to.
Maybe it's all just a matter of not having the right knowledge or experience. Programming is easy - I always feel like if I can't see the path I'll eventually be able to find it. Same with UI/UX. Not so with marketing, getting feedback, and iterating.
Made to Stick is an excellent read on the subject of branding and marketing. http://www.heathbrothers.com/madetostick/
I used to run a blog in 2008 and I got it to 6.5million page views before I quit it and I was featured in the book "Blogging Heroes" along with the founders of Lifehacker, Engadget, Ars Technica, Gizmodo and Boing Boing.
My key strategy when I was growing my blog was to find existing communities that would like what I was writing and then build relationships with those communities.
I also changed jobs to something more interesting and now that's where I put my passion instead of a hobby.