This was the subject of discussion in a gathering last Thanksgiving night. Facebook was recently "over" estimated by a private equity research firm to have market value of $41 billion, more than eBay ($39.1 billion) one of the largest e- retailers in the United States and much more than Yahoo which is valued at $21 billion. What I am trying to understand is that the current market value is based on it's revenue and future revenue predictions or just a shot on its popularity and web traffic. I must confess that I haven't got chance to read the book The Facebook effect yet even after many strong recommendations from my friends, but I have kindle now and I will be travelling soon. So this book should be the way to ease the pain of long security lines and evasive TSA scanning radiation. Facebook's 2010 revenue is totally a speculation, but 2009 revenue was about $500 million which were reported coming from these sources: Self-service ads, which appear on the right...