They do the following:

1. follow me to any thread I start,and criticize me purely for posting the thread.

2. make personal attacks and paint people who don't agree with them in a broad brush - anyone who has concerns about Gardasil or posts news articles critical of it are - fundies, conservatives, anti sex, anti science, anti vaccine, etc.

3. make false accusations. i.e accuse me of slandering Merck because I posted a news article (run in the AP no less and based on a medical journal's complaint) that exposes Merck for deceptive and dangerous practices again.

4. make posts telling me that my Op doesn't belong in the Health Forum.

5. disrupt the threads, any threads and all threads that I post.