Social bookmarking traffic and organic traffic are 2 diff terms. If you mean its a safe traffic, i can understand. for your understanding the following types of traffic can be identified: 1)Organic :Coming purely from SE 2) Social traffic :all social bookmarking traffic - Good but doesnt convert 3) Paid traffic : Big no no for adsense 4) Direct traffic : Bookmarked or type in traffic Does that clear your doubts of organic and social traffic ? hope that helps everyone else, especially the newbies
I've found that people on Social Bookmarking sites tend to have advertisements such as AdSense disabled. This is especially true for Digg and Reddit users.
so not only content determines your click adsense value profit but also from where the visitor is coming from? wow, thats deep. so no matter what, the highest paid clicks will most likely be from a user who found your site via searching for infomation using a search engine like google.