Imageshack? Don't really know to be honest, I've only ever used IS and it's never let me down. Displays all your images in a nice grid too, with direct links to said images provided on the spot. I do think you can upload through the XMB to Facebook (not 100% sure), but I think you'll find nobody will be viewing them as much.
Basically, USB thumb drive > PC > IS/Flickr/PB. Bit of a faff, I'll admit, but it's the better option in the long run.