My first thought always, and recently confirmed by the CNET abuse of editorial discretion, is can the rankings be trusted? Because I can websearch and find half a dozen other sites with recent reviews, different rankings, and some of the suites listed here won't be listed there and vice versa. Better to be a skeptic and hang out a sites like DC where you get recommendations from real users of real products. Having said that, I use AVG free and when I'm tooling around on Chrome I use a program like Webutation to warn me of risky sites. Haven't had any attacks since using this system.