Free Mac Antivirus from Sophos

I often recommend AVG to Windows users looking for a free antivirus product, but I haven't had a good recommendation for Mac users - until now.

Sophos makes their Mac Home Edition antivirus software available for free at http://www.sophos.com/products/free-tools/free-mac-anti-virus/

Sophos has impressed me in the past, and this looks like a very nice solution for Mac users.