Linguistics Identifies Anonymous Users
mask.of.sanity writes "Researchers have examined writing styles to identify previously anonymous carders and hackers operating on underground forums. Up to 80 percent of users who wrote at least 5000 words across their posts could be identified using linguistic techniques. Techniques such as stylometric analysis were used to track users who posted across different forums, and could even be used to unveil authors of thesis papers or blogs who had taken to underground networks."
Actually, it's the exact opposite.
Anti-plagiarism software searches for the same content with completely different styles.
Writer identification involves searching for the same style amongst completely different content.
The right to offend is central to the right to free speech.