An update on this. The service which was previously free now attracts a monthly charge of $7 approx. This way all my posted images are protected. Recently, again on the quiet, they have altered the rights so I have to pay a bit more to be able to host an image. I can log in and upload images as an online bank of photos but at present the ability to select a photo for hosting to the forum has been removed. This has happened in the last 6 months or so and I have not done anything about it. The monthly charge may now be around 10-12 pounds. Need to look at it and see how to Implement the increase.
Unfortunately if I dump PB all myphoto contributions will disappear. It is not a lot at the end of the day but they will ultimately disappear when it is time to go to the garage in the sky.
Nothing to stop you downloading your photos back down to your PC. I had a bunch up before they went pay only but I had downsized them anyway so all of the originals are still on my PC. Where ever you go just copy them there so you still have the original.