I have used Flickr for some time and believe that it is currently a better solution than Google's Picasa Web product. However, I also believe that Google's offering start small ( I have been a Google user since the Google search lauched in 1998 ) and evolve over time to much better things. I have never liked Yahoo! or Yahoo mail. It's an also ran to Google and Gmail. It was not until Google offered 1GB email accounts and the ability to sort/filter/search one's email that Yahoo decided to overhaul it's mail.

I am also a University of Michigan Alum (like Larry Page) so Google's my choice. Go Blue!