Diigo and Flickr are both ways of sharing your personal favorites with others. The only difference is one is to share your favorite websites while the other is to share your favorite photos. I think they are both great tools for people who spend a lot of time on the internet. I personally think that flickr is a better tool, as many more people enjoy sharing their personal photos with others than what they do websites. I have used other websites for photo sharing. The one I am most familiar with is myphotoalbum. This a website that you can buy membership to… I personally think that the free flickr website is just as good. The only advantage to using myphotoalbum is that you can also buy products with your images on them. As for me using flickr and Diigo. I may continue to use flickr. However, Diigo is not something I would see myself using often. Diigo is however a great tool for those people who like to share websites.