I use Flickr for storing my photos, though I also post some images on to various social sites and blogs.. But most of the photos I've taken with my various digital cameras and phones end up on Flickr at some point.
Up until a couple of days ago the license on all the images was restricted, though you could ask me for permission for a license. I'm not sure why I set the license that way, though I think it might have been a few years ago when I was constantly finding people ripping off my content..
In any case I've changed the license on most of my photos and images to be:
The only exception being the "Blacknight images" set, which is mainly made up of images that we have produced for marketing etc.,