Now what is popular on the Internet is of course free. With the competition in the software industry becoming increasingly fierce and marketing strategies of software companies changing, more and more free software becomes available to us. Before February 21, 2011, Panda Antivirus will give users a free one-year serial number and users who activate the software will have a chance to win prizes such as an iPhone or iPad. If you happen to want to download an antivirus software or want to change your existing antivirus software, then make your move quickly.