Pinterest does have a good UX for their target users though. They are targeting people, like my wife, who use it to create a visual collection of ideas for the

Pinterest does have a good UX for their target users though. They are targeting people, like my wife, who use it to create a visual collection of ideas for the next remodel or the next quilt or next woodworking project. She is looking for pictures and what is currently trendy so Google Image Search alone doesn't solve her problem. She doesn't mind using her Facebook account because she will show off her completed projects there any way. I just don't think you are one of their target users.