Oh, its definitely usable and I do use my iLiad for emails and surfing. I just didn't want you to think its anywhere near as fast and reliable as a PC for using the internet.
I can easily access this forum and many other sites and I download from Feedbooks directly to my iLiad quickly and easily with iNewsStand.
I tried to access Yahoo Mail to test it for you, but neither of the iLiad browsers I use are supported. The 2 browsers display websites differently (Midori is the middle pic, Dillo the other 2 pics).