Unethical behavior in social media.

Identify an example of unethical behavior in social media. The behavior may be on the part of a celebrity, politician, or organization.
Referencing content from the the aforementioned article and other credible sources (cite them!), explain:
What happened
Why it was unethical (cite sources)
Whether it was also illegal (cite sources)
Whether and how the firm made amends
One way other firms/individuals can avoid making the same mistake.