Its Completely free to download,update and Use..ha ha...
And Better i no need too explain you why we need an Antivirus...
Why Choose Avira 2013??
Few Striking points are
My Personal Suggestion hmm ....I would say that this program may be worth a look if you are in search of good free antivirus but I suspect there may be better options available to you this year like the paid antivirus like many's are there....if you are running in for any organization then must go for a paid total security,IF you are Dealing Transactions Over Internet Then Internet Security is must.
Any Way Good Night all Me too falling sleepy ...:) Take Care :) Love you all