No one like having their content stolen. It’s even worse when it ends up on low quality spammy sites that drag your backlink profile down into Penguin target territory. If the website in question is scraping a significant portion of your content, like entire articles verbatim, filing a DMCA takedown compliant with Google can be effective way to get it removed.
First, attempt to contact the site owner and tell him that stealing content violates The Digital Millennium Copyright Act and you will file a DMCA takedown with Google if the content is not removed. If you don’t get a response, then file the DMCA takedown request. If it is a Google properly, such as a blogspot blog it can get completely removed, otherwise it will be removed from Google’s index. For non Google properties, select the “web search” option.
Reporting spam, such as paid links and malware is a different procedure.
Google has separate forms to report copyright infringements on properties that it owns. For example for copied content on blogger you can complain here: DMCA Complaint – Blogger