I think I am speaking for many men when I recall my initial reaction to Pinterest: "So you post pictures of things you're interested in -- or that you just happen to like the way they look -- and then... talk about them? And that's it?" But now that the site has built a loyal user base numbering millions of women, it's inevitably trying to attract male users as well. And drawing on my deep knowledge of gender relations gleaned from standup comedy routines, Cosmopolitan, and other trustworthy sources, I would argue that getting men engaged with Pinterest is a …