I really enjoyed looking at the different sites. I had never seen Teacher Tubes or School Tubes before; they have lots of great videos for kindergarten level. I did find the blinkx was easy to use and I could find specific subjects easier through this site.
I have never used Picassa, but enjoyed looking through the great pictures available.
I understand the copyright and fair use laws and feel that teachers have a wide range of access to information.
I have downloaded Dropbox and think it will be a quick and easy way for me and my students to access the things we need.