Web Spam refers to tricks and technique used to manipulate ranking in Google search results. Web spam includes paid links, abuse, or inappropriate content and many more. You can report the following kind of spam:
- Selling or Buying Links – Report
- Copyright And Other Legal Issues
- Objectionable Inappropriate Content
- Personal/private Information Disclose
- Malware – This Page Is Infected – Report
- Getting Sensitive Information By Phishing – Report
- Other Google Products
- Violating Webmaster Guidelines
- Non Compliance Of Google Rich Snippets
You can also report inappropriate posts, photos, videos, or profiles on Google+ violates Google User Content and Conduct Policy. You can report following issues
- Report a post
- Report a comment
- Report a photo or video
- Report a profile or page
- Report a community or collection
- Report an event
- Report a video Hangout
- Report a copyright issue
- Report a legal issue
If you report the issue is manually checked by Google spam team and they can impose manual link penalty. Google said that about 65% of spam reports are acted upon.
Get more detail on this page . You can read the following policy of Google on various issues
https://www.google.com/+/policy/contestspolicy.html
https://www.google.com/+/policy/content.html
https://www.google.com/+ /policy/hangoutsonair.html
https://www.google.com/+ /policy/call-phones-terms.html
https://www.google.com/+ /policy/pages-services.html
https://www.google.com/+ /policy/tos-custom-url.html
https://www.google.com/+ /policy/pagesterm.html
https://www.google.com/+ /policy/embedded-content.html
