Online Profiles are not "Broken" as much as they are "embellished". By that, I mean that a big majority of users -- I would say as much as 95% amongst guys and 40% amongst girls -- embellish their profile in areas where they internally feel they are lacking / inadequate.
I have met 100s of guys from plentyoffish.com match.com and okcupid.com (before match.com acquihired them) and can say that most guys lie about their height, as well as their jobs. It's annoying for someone really attractive and intelligent like me because it wastes so much time!