People around here love free themes. Some because you generally have one that you like and it's all that you need. Some because you really don't have the money right now to pay for a premium theme. Some of you because you are just downright cheap and refuse to pay for anything if you think that you can get it for free online, even if it's not supposed to be free. This author of this article from WPMU investigated exactly what you are downloading from some of the highest ranked Free Wordpress Theme sites. Most of us already know this, but there are many that refuse to believe that many free themes are malicious and are only free because they have ulterior motives. Just like most other free or warez downloads online. They have junk in them. Basically they are using you. Check it out and draw your own conclusion: http://wpmu.org/why-you-should-never-search-for-free-wordpress-themes-in-google-or-anywhere-else/