Report Spam and Copyright Issues to Google

You can report a spam page to Google to penalize it through this link

• Google Spam Reporter
• Report Paid Links sites to Google
• Report a Phishing Page to Google 
• Issues with Websearch

You can also appeal to Google if you think that you've been hit by the Penuin webspam algorithm update
by filling this form

Feedback on Penguin Algorithm update

Contact Google and file a Digital Millennium Copyright Act (DMCA) complaint. In addition to Google giving your site credit for the original content, filing a DMCA complaint may result in Google completely removing a blog or website that is full of stolen content from their index. You can also file a Spam Report with Google to help fight back against content thieves.