The more votes a link have the more popular & captivating the page is.

Better than spyware: demanding causes for the existence of spyware is the capability to spy on user surfing habits & to gather a user profile. Merchants employ these gathered profiles to lay out suitable ads according to the user's concern.

In social bookmarking sites, the buyers themselves unintentionally creating their own profile. By polling for a site or news item, the buyers claiming "This is of interest to me". The count of votes indicates the user's taste and thus assists in creating his profile.

The casting votes history (diggs) is already publicly available in numerous web sites. You may merely examine all the stories by merely visiting any user profile. Then you may imagine what attracts that user.

Certain of these web sites comprise privacy policy noting they will not cash in on personal information, but on others there is no privacy scheme and they are unrestricted to carry out whatever they want with this valuable information.

Large web search engines & high portals which may compile such type of private message are beneath bulky common analysis considering a security of such kind of info, but still mundane book marking websites stayed under a radar.