Below is the result.
Free Malware Removal Antivirus 2012:
1. AVG Anti-virus Free 2012: this free version of AVG Anti-Virus 2012 be able to remove 88% existing malware, 100% protection from rootkits and 100% protection from scareware.2. Malwarebytes' Anti-Malware Free 1.51: this free tool be able to remove 79% existing malware, 57% protection from rootkits and 100% protection from scareware.
3. Norman Malware Cleaner 2.1: Norman Malware Cleaner 2.1 be able to remove 85% existing malware, 71% protection from rootkits and 100% protection from scareware.
4. Panda Cloud Antivirus 1.5 Free Edition: This free edition of Panda Cloud Antivirus be able to remove 91% existing malware, 100% protection from rootkits and 100% protection from scareware.
So, for you who do not want to spend money to buy new 2012 antivirus, Panda Cloud Antivirus 1.5 Free Edition is the best choice to clean up your computer. Not Only good in removing malware, it also has a good capability to blocking 86% new malware, blocking 100% new rootkits, and blocking 80% new scareware.
However, if you sure enough that your computer is totally clean from viruses or malware (or you have a brand new PC or Laptop), I suggest you to use AVG Anti-virus Free 2012. AVG Anti-virus Free 2012 has a better capability in BLOCKING malware rather than Panda Cloud Antivirus 1.5 Free Edition. AVG able to block 94% new malware, block 100% rootkits, and block 100% scareware.