The following web2.0 sites would be useful for science educators at the high school and middle school level. Some would also be appropriate for higher elementary grade levels. There are many new 'tools' or websites that take advantage of the higher speed and bandwidth of today's Internet.
"Authors Who Skype with Book Clubs\n\nThese authors are willing to participate in 20-minute Skype visits free of charge. (Many also offer more in-depth virtual visits for a fee.)"