What is a good, safe, and free antivirus for macs?

I want to know a good, safe, and free antivirus program for macs please.

Clamxav for Mac is free and reasonably good.

See ClamXav

You're probably not going to need one unless you do one of the following: open attachments from people you don't know, use pirated software, click popups and links to places that are sketchy and/or network with Windows machines (not that a Windows machine will give you a virus but Windows viruses can be transmitted through Macs).

From what I know, clamxav is more for checking for Windows viruses to make sure that they are not passed on to other Windows users. To quote their website, "Firstly, there's no guarantee that we Mac users will continue to enjoy the status quo, but more importantly, the majority of the computing world use machines running MS Windows, for which an enormous quantity of viruses exist, so we must be vigilant in checking the files we pass on to our friends and colleagues etc."

Would you all recommend that i use antivirus?

I was searching for lyrics online and i went to a site that gave me a few popups so i was wondering if i needed antivirus.

There are several suggestions and other information in the sticky thread:

http://www.mac-forums.com/forums/switcher-hangout/23835-official-mac-antivirus-firewall-faq.html

WHY?!?!?!?!?!?!?!

honestly apart from raising your posts number this thread is pretty pointless. So thx m8

Does ClamXav get updated frequently?