"I'm not just exposing myself online as I share things with my now 2,000 followers on Twitter or my 1,500 "friends" on Facebook or anyone who sees a photo I leave public on Flickr. I'm giving away details of my life to strangers that could let a crazy person make themselves seem familiar to one of my kids."

--Danny Sullivan, writing about how he needs to not only manage his online identity, but teach his kids about stranger danger in this world where experts are brands.