I have a Pinterest account but have used it only once.. haven't even really looked at the site much.

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Apples and oranges.

Facebook number 1 but if you want to PIN your pics then Pinterest is no. 1

But you'll see loads of amazing images on Pinterest, for sure.

Facebook is better than pinterest

I'm not sellin' all that stuff for womyn, so - FB.

Very interesting question. It's very difficult to compare such networks)
The difference in audience is very big. If your target is women - go to Pinterest. But I think that Pinterest traffic doesn't compare to Facebook traffic. Just imagine, Facebook has 845 million active users!

havent really tried pinterest...

Not really a comparison as pinterest is just for pictures. Facebook will win that war.

I've just signed up for pintrest, and I gotta say I'm impressed. The exclusivity of their "invite" system does make it quite appealing. But Facebook is so so so easy to use, and it's been around long enough that even my mom has an account so it is handy for keeping in touch.