Here's some more info on how to wear properly...
thebabywearer.com posted several things on their home page responding to the CPSC warning.
This is a good quickie handout: https://www.facebook.com/l.php?u=http%253A%252F%252Fwww.slingsilove.com%252Fbabywearing101.pdf&h=ac2e1c70aa3fc25d49c53f6453a1a099&ref=nf
Please add others if you find them!