As online earners, we definitely don't want any infected stuff in our PC. Anyway, here are some of my advice as a long-time *downloader*. 1. Careful from downloading anything from Warez site or those cracked applications or those that comes with keygens as a lot of them are infected. Believe me. I know. There was one time I download FLStudio from a warez site. Little did I know that it was made to SPY and send information to the internet without me knowing. It means its infected with a spyware. My antivirus, Avira, didn't detect it. Instead, I found out about it when I installed ThreatFire. 2. In relation to number 1, have an antispyware software that provides real-time protection. 3. Download from legit sites like CNet, BrotherSoft, Softpedia, and Filehippo as the applications here are 100% clean. If you encounter a site you barely know, research first. Ask Google's search engine if its legit or not. I'm sure there's gonna be results. 4. Careful with downloading OPEN-SOURCE files from other sites. I found out from How-to-Geek (link here) that there are sites that offers FREE but INFECTED open-source files like this site here. *WARNING! DO NOT DOWNLOAD FROM THESE SITE* http://www.gofree.com/vlcmediaplayer.php http://www.vlc.us.com I only download open-source files from SourceForge or in the legit sites I listed above. If a site looks funny, leave it. 4. Always have an updated antivirus and make sure its real-time protection is turned on. Did you know that scanning a file through an antivirus and then it gave you a clean result, doesn't ensure you that its not infected? In H4ck4tt4ck before, used to be a PTP forum, someone posted a way to infect a file that can't be detected unless you run it. That user even uploaded his file in those Online Scanning sites (the one that scans you file with all antiviruses) but the result was 100% CLEAN. Scary if you download similar files, huh? --- I hope these helps.