Of course I added it to my resume! All the companies I interviewed at (all small companies of <10 people though) thought it was a huge bonus for me. Even though I'm only a medior developer I have proven that I can work independently and responsibly. It also gave me a lot of cool projects to show.

That's how I did it; I just demo'd them the coolest apps I built and explained why they were cool (google tweeted about it, won the imagine cup with it, got covered by major news sites, etc.).