doesnt Pinterest smell too much women (no disrespect whatsoever!) by now? I mean, its been built upon profiles of shoes, wedding dresses, carpets, flowers, knitting stuff, etc. I wonder if they will be trying to shift it more towards men, or perhaps there is a good niche right now here: built pinterest that has a strong lean towards men interests: cars, women, alcohol, bikes, boats, luxury watches, houses, cool places, etc, etc.
EDIT: although second thought. Pinterest strong side is that women (more than men) like to collect stuff. Nice thing about Pinterest is that you can pinboard your collections, join others, etc. I am not sure if the same effect would work on "mens pinterest".
I think you'd definitely want a separate space for men, although I don't think you will ever get as much traffic. Sharing the website (even though it is technically done that way right now) would be weird - most women aren't going to be interested in a handgun on the page or a swimsuit model or a muscle car.
I don't think a men-only version would work anyways. Men just don't tend to 'window shop' like women do. Men also don't like sharing as much as women do.
EDIT: although second thought. Pinterest strong side is that women (more than men) like to collect stuff. Nice thing about Pinterest is that you can pinboard your collections, join others, etc. I am not sure if the same effect would work on "mens pinterest".