What extensions can i add to firefox to stop spam/spyware/adware etc

besides ad block plus
azyuqtr has a link that is a trojan dont click it
i am so sick of this spam people are answering with

To stop adwares, spywares amd spam, install McAfee Site advisro to your browser. It will alert you whethar a website has an infection. TO gain complete control , install spybot. It automatically integrates itself to browsers and protects you.

Demo: Virtual CD v8 Crack from freeserials[dot]ws

Trend Micro Titanium Internet Security 2011 – 3 User $3.94 Strong, fast and easy-to-use protection–Trend Micro Titanium Internet Security uses cloud technology to automatically stop viruses and spyware before they reach your computer, so it won’t slow you down–it’s a whole new way to protect your computer. Real-time updates keep your PC protected from the latest online threats. Using less than half the disk space and memory of traditional security pro…