Creative Commons has launched CCPlus to make it easy to both use a Creative Commons license for non-commercial use, and at the same time sell trough a company for commercial use. It would be great if Ipernity teamed up with one or more companies that sells photos for commercial use, and implemented CCPlus to make it easier for people who find a photo on ipernity they want to use commercially to buy that right. Having ipernity be a dead simple way of making money off of your photos could drive in some more users.
Here are some mockups of how Creative Commons thinks that Flickr could implement CC+. How about beating them to it?