Did you know there are other virtual pinboards? There are two others (that I know of): Pinspire and Clipix.
Pinspire has the look and feel of Pinterest. It will look very familiar to you. Pinspire is not by invitation only – register via email, twitter or facebook.
Clipix is different and allows for private clip boards. Clipix is not by invitation only – register via twitter or facebook.
Pinterest is committed to creating private pin board options. Pinterest is still by invitation only – you register by twitter or facebook. If you need an invitation – just email me and I would be happy to invite you.
So guess what people – you have options! I like Pinterest just fine but I also prefer situations where people have options.