Apple likes to maintain tight control over its image and that extends to any outwardly-facing public social network, especially Facebook.
Sure, the Cupertino firm maintains its own Facebook pages and Twitter channels, basically outlets to spread news about new iTunes content, product updates, support documents, etc. in a tightly controlled manner. But If you thought each Apple employees is his or her own person and entitled to express opinion about the brand, you’re in for a surprise: Tweet/post/blog negatively about Apple and you’ll get fired. Period.
One employee in the UK went on to berate Apple “privately on Facebook”, arguing the posts were not public. ifoAppleStore.com has the story of an Apple employee named Crisp who appealed to the UK labor after being fired for “gross misconduct”: