There might be a season 4 but a season 5 is not yet predicted
no but there will be a Avatar the Legend of Korra
There is already a season 3 of Avatar: The Last Airbender, It's called Fire.
of course it will
The Legend of Korra which is coming out somewhere near September in 2011 :)
Avatar: The last air-bender movie 1 came out on June 30, 2010.
It's "The boiling rock" and its in two parts, check google
You can get "Avatar: The Last Airbender" episodes on iTunes.
Yes
There already is.
TokyoPop
yes there is
All of the 'Avatar the Last Air Bender' seasons and episodes can be found on Amazon Prime.