I feel the opposite when I think about Pinterest. My immediate reaction here is "yeah, makes sense." I guess it must stem from my marketing agency days. I had SO MANY clients begging me to get them into Pinterest ads when they released. I also sit at home and see how much time my wife spends on the site and how dedicated she is to discovery through the app, especially as she makes many purchasing decisions after seeing things she likes pinned, from food to furniture.
Seems like a no-brainer that this one is going to end up crossing the IPO finish line at some point, and I would imagine they have bigger and better plans moving forward. I barely think they've scratched the surface of profitability.