- Paid Links
- Spam Comments
- Duplicate Content
- Article Spinning
- Cloaking
- Doorway Pages
- Keyword Stuffing
- Invisible Text
- Content Automation
- Hidden Text or Links
- Reporting a Competitor (or Negative SEO)
- Sneaky Redirects
- Link Schemes
- Guest Posting Networks
- Link Manipulation (including buying links)
- Article Spinning
- Link Farms, Link Wheels or Link Networks
- Rich Snippet Markup Spam
- Automated Queries to Google
- Creating pages, subdomains, or domains with duplicate content
- Pages with malicious behavior, such as phishing, viruses, trojans, and other Malware
