Follow the yellow brick road...or in this case, just follow the links. My friend Jimmy posted this link on his site, Woodshavings (see sidebar for link). I encourage you to read this post by the Internet Monk. He links the posts he's commenting on. Okay, that's a lot of reading...but well worth it, imo!
I don't seem to have much worthy to say these days, so I'm happy to pass along the insights of others.