Literally my favorite purchases in the last two years were:
1) Rollerblades from Goodwill (just 8 dollars)
2) A Kinetic Torus Knot (my favorite stim toy now)
3) All my thrifted clothes (im so broke)
As an introvert myself, I think that the idea is fantastic!
I suffer from anxiety and making friends can be very difficult, but having an application to be able to connect us introverts to each other....sounds like a very good idea!
I think the net is a place to represent who you are and do what you love or learn what you love. You'll find communities and articles and start ups and people, maps and info and forums, places and things to do, and just...people. I think it's an international space of people that evolves to what we do, and what we create.