I have been using Pinterest for about two weeks and I have to admit I really like it. I have never before used similar visual applications because they are generally not my cup of tea. What I liked about Pinterest is that it is what you make it to be: it's not restricted to women's fashion or obscure designs.
You can pin whatever you are passionate about and that really shows in my friends' boards: each one has a unique approach. Some are creating boards to find inspiration for their wedding cake or new home, others to spread motivational posters, still others share beautiful infographics of social media use.
Granted, my pinboards are basic and partially empty. But I can definitely see myself using the app regularly in the future. Though I do think certain improvements are needed in stream filtering, social features, privacy settings and pin button functionalities.
I also agree with Kate Bevan from The Guardian who nicely summarized why Pinterest is not just for girls.