I removed my port last year I think, or was it the year before. There were a number of reasons for leaving. One of them being I didn't like working with them or the way they worked (this might not matter to many people but it's important to me).
The strangest experience I had was when I wrote to them asking to change the descriptions of a few editorial images. I had made a terrible mistake in the descriptions of these images which needed to be rectified to be factually accurate. Instead of a thank you for informing us email (remember the mistake was being displayed on their site and being viewed by their buyers), I received a long winded and scolding email basically saying don't do it again (does anyone actually set out to intentionally make mistakes?) and saying how difficult it was for their IT personnel to change the descriptions, maybe that's a good indication of how smart their IT personnel are. They did inform me they will make the changes to the descriptions though. They never actually did. There's a difference in making a mistake and being unprofessional. I made a mistake, they were unprofessional. I don't regret leaving.