It's when you play smooth chords as opposed to runs, riffs and choppy chords, It's good to use when you are playing with a full band like when you have a bass player, guitar and piano player. since it's thier job to play "percusive" you dont want to be on the organ playing choppy like u would on a piano because it will sound like a mess. Of course you can thow in a run and riff every now and then but when playing with a band it's better to keep it simple. I'll try to post an example on youtube later this week if i have time, I have a VHS Tape explaining Padding perfectly