Keeping a Windows PC running fast is tricky, because it seems to slow down over time simply by using it. There are a lot of companies out there offering to speed up your PC, but they are usually scams or have dubious value. This post collects the tools and techniques that I use on a regular basis.
Posts About anti-virus
Microsoft is now offering their free Security Essentials software to small businesses.
A summary of testing performed by AV-Comparatives of popular anti-virus software.