Good traffic makes web site owners happy. I know that it’s not something new to you. If you have a good stream of traffic to your website, there are much more possibilities to earn money from it.Couple of months back, I heard that Facebook had massive traffic more than google did in United States. Do you think that Facebook will stop getting more traffic because they already have it hugely? No. Every website draws on more and more techniques to catch more traffic.
You can see Facebook is trying to attract more traffic by setting facebook as the homepage in browsers.