Again, that is just insane. What kind of fucking retarded employer would not only judge someone based on online behavior (which mostly has nothing to do with offline behavior, as people react differently offline than online in most cases), but trust spam results and such? Not one you'd want to work for, that's who.
The kind of employer who happens to be a Fortune 100 company, for starters. The one I work for monitors internet postings (like the one I'm writing) on many social networking sites, search results, and public records for employee or potential employee activity which may damage the company's public image or leak sensitive/proprietary information. If the information that the company does so weren't considered public knowledge, I would never have considered posting here. While most companies, my employer included, use (at least) a "human" filter for the gathered data, many rely on simple algorithms or third-party search agents which may provide a number of false positives.
The unfortunate fact of business life inside the corporate suite is that your life outside does directly affect your earnings and advancement. For instance, tweeting about a hobby the boss doesn't like (dog fighting, poetry slams, line dancing, whatever) can easily take a job offer off the table or cause the HR department to start the death-spiral paper trail. Facebook photos from high school or college where the subject is involved in illicit, distasteful, or bacchanalian behavior can quickly erase a large portion of lifetime earning potential should they be found and individually identifiable.
The most important early product on the way to developing a good product is an imperfect version.