Google … omg , thats nasty !!
Google Paper :
http://mail.google.com/mail/help/paper/
http://mail.google.com/mail/help/paper/more.html

Google TiSp :
http://www.google.com/tisp/
http://www.google.com/tisp/install.html

& more @ http://en.wikipedia.org/wiki/April_1%2C_2007

Thanks to maz & simnom for the links …