Downloading the free AVG 2011 from CNET download.com and saw an ad banner that I would normally dismiss saying get full version free. Investigated and found that one of the offers that you can complete is with HP snapfish (reputable so thought I'd give it a go). Signed up for a new account with snapfish from the Trialpay link uploaded 40 photos ordered them to be printed (40 free prints for new customers), paid the 99p for delivery and instantly was sent the license key for AVG full package for a year!
Best experience ever with one of these type deals - now have the far superior AVG full and 40 photos on the way that I didn't need but have only paid 99p and only took 10 minutes!!!
edit: use this link http://www.trialpay.com/checkout/?c=ecee747&tid=9ahIMOa
rather than the direct link to snapfish as you need to sign up through Trial Pay rather than directly to get this!
(Used AVG image from CNET - mod please ed if not appropriate and add tags - thanks)