We have all heard stories of people that got the sack because they wrote something about their employers.
Now we have this:

In addition, Google’s corporate blogmistress admitted that the company has a special e-mail list where employees send personal blog posts for “vetting.” (Sadly this detail didn’t make the final article.) She also said Google routinely reads the blogs of potential employees before hiring them. Yes, we all know this is true on a common sense level, but it’s another thing to have someone officially admit it.

Full article

Is it acceptable to read someone's blog to decide whether to employ them or not?
Would it work anyway?
After all I could have two blogs: one where I write what I want but using a false name and one with my real name where I make myself look good and the perfect employee.