Job applicants can easily collect a bunch of information that is otherwise difficult or illegal to get. Upload a text file or spreadsheet of your customers' emails and instantly get age, gender, and more.
Interesting answer. Also, this is the first time I've actually been referred to something on Quora. So somebody is using it after all!
Journalists versus the Internet. Guess which side Gladwell takes? Gladwell would be well served to not reviewing books he has such stake in. I've never seen him look this defensive or uninformed.
