No doubt ipernity has a potential. As it is a clone of the unspeakable photo sharing website (or an evolutionary advance of it) comparisons are unavoidable. Ipernity has a set of additional features and it has dozens of creative and friendly users.
But it seems ipernity is not ready for the world.
Ipernity does not have groups (they have been promised to appear live on the site some time in the future). And the rival has tons of everything that makes the site running. Sometimes this is just too much to handle, sometimes a kind of behaviour is rather not our cup of tea but sometimes it works wonders.
One example... F*r has a group called "ID please" and it has proved invaluable for me with identifying photos of plants or bugs I take. A crowd of "ID please" experts is extremely fast and they can provide answers that without them would be very difficult or impossible at all.
Let's only hope ipernity in the course of time will also produce such helpful communities of users.