Freedom of Speech?
The Detroit Free Press had a story recently about a man from Howell who was NOT happy with the contractor he'd hired to redo his bathroom. He was spending $18,000 on the project and got frustrated with the way it was going, so he started posting comments on-line about the contractor. The contractor got angry about the comments, so he sued the guy over it.
That's not the first time that someone has gotten sued for sharing their reviews of products or services online - just a heads up.