Re: Pearls of Wisdom from Dave Grohl
I can't say you don't need the Internet.
Nirvana broke thought before the net was big. Now, having a myspace/soundclud/fb is pretty essential to have for a band that is trying to do something. No one just walks down the street checking random garages for potential bands.
Although Dave is still right, practice in the garage and write songs BEFORE you do all that.
As for Idol, I never watch it, and don't care for it. But I have buddies who do/have toured as the drummer behind past AI contestants. If it wasn't for the show, they wouldn't have those gigs.