According to Worth of Web, which says it comes to its calculations this way...
Worth Of Web is a free website valuation tool which estimates the traffic of a given website or blog, and calculates the income of this website, not the profit, assuming this website is only using advertising programs or similar affiliate programs to make money. In addition, the estimated worth above is for website only. You need to add the brand value to this website worth to determine the price tag.Let's take a look at the value of some popular South Florida blogs...
No fair linking to this post for those of you who consider SFDB worthless.