The vote numbers will settle for the popularity of the web page.
Superior to Spyware: Inspecting the buyer's surfing habits & compiling the customer's profile are chief causes behind the continuance of spyware. Advertisers utilize these gathered profiles to display appropriate ads as per the user's interest.
In the case of social bookmarking web sites, the users themselves unawarely building their own profile. Actually they are not casting votes but circumlocutorily presenting their own profile to websites unintentionally. The number of votes indicates the user's interest & so helps in generating his profile.
In several sites casting votes history is publicly displayed. You can easily look at all the stories by simply going to any user profile. From there you will imagine what attracts that client.
Even though several of these websites assure not to leak your confidential information but still they feel unobstructed to do anything with the priceless information unobstructedly.
Big web search engines & big portals that may compile such type of private information all come underneath bulky common inspection considering the security of this type of data, but earthly bookmarking sites stayed underneath a radar.