Numerous home improvement books are being recalled because of incorrect information that can lead to shock and fire hazard.

I sure everyone has had an encounter with a "happy homeowner" and knows that a DIY'er is bound to mess things up but even the books had it wrong.

http://www.cpsc.gov/cpscpub/prerel/prhtml10/10104.html

I can think of a few ways this information could be used to help grow a licensed electrical contractors business. Hope it is useful to you as well.