I'm looking for the best photo sharing site to use. I'm in the process of scanning a few thousand old family photos and want to share them with family members. Preferably I would be able to 1) limit access to family only and 2) others would be able to add tags of people to the photos. I don't want to use Facebook. I looked at Picasa, but they don't allow others to add tags. I'm looking at Flickr to see if that will be a good option. Also, I would like to be able to export the tags from the jpgs and transfer them to the .tiff originals (is this possible?). Do any of the photo sharing sites allow this? If not is there other software I could use and host it myself?