NO
It depends if the Guitar Hero 3 songs were released as DLC on GH: World Tour. There is no way to directly import songs from Guitar Hero 3 onto World Tour.
Custom songs are songs that Guitar Hero player across the world cerate in the Guitar hero studio. They make their own tunes and let others play and listen. Any one who has a Guitar Hero game with the studio in it can do it.
No. Rock Band songs only work with Rock Band, and Guitar Hero songs only work with Guitar Hero.
You can play songs from your ipod touch on guitar hero for ps3 as long as you have the cables to connect.
Guitar Hero World Tour is Guitar Hero 4.
No, DJ Hero will be the only game to have guitar songs.
Guitar Hero is a game where you "play" musical instruments to songs. Basically you play the note that is prompted. All Guitar Hero games feature guitars, and Guitar Hero World Tour also features vocals and drums as well.
Guitar Hero 5 is the fifth installment of the Guitar Hero Games. It contains many songs you can "play" with the guitar provided.
No. How do you expect Guitar Hero to make any money off of download-able songs if people can just play their own?
yup
No