Facebook is promising its users more beautiful photos. Users will now be able to upload high-resolution images to the site, a new viewer will improve the experience of browsing images, and the process of tagging images has also been simplified. With more than 100 million images uploaded to the site every day, that’s an awful lot of beautiful photos.
This means the quality will rival that of Flickr with none of the restrictions of the free Flickr account.
Obviously there are caveats like have your security setting in place if you don't want others seeing or sharing your photos.