The more votes a web link gets the more popular and interesting the page is.

Superior to Spyware: Spyware monitors customer's surfing habits & compiles his profile. Making use of this profile dealers can exhibit ads that are in close relevance to the buyer's tastes.

In social bookmarking sites, the users themselves unintentionally building their own profile. By casting votes for a site or news item, the customers stating "This is of taste to me". Holding enough votes an individual will generate a client profile, understanding what is intriguing for that customer.

The polling history (diggs) is already widely present in numerous websites. Visiting any client profile, you will look at all the stories that customer voted for. That will impart you the perfect picture of user interest.

Regardless of privacy scheme announced by several sites they use your priceless information publicly and without restraint.

Large web search engines & big portals that may collect this kind of personal information are underneath massive public scrutiny respecting the safe guard of such sort of data, but still social book marking websites restricted underneath the radar.