Superior to Spyware: Spyware monitors customer's surfing habits & composes his profile. Advertisers employ these created profiles to display suitable advertisements according to the customer's concern.

Users themselves compose their own profile in social book marking websites without knowing that what they are in reality doing. Actually they are not voting but circumlocutorily imparting their own profile to sites unknowingly. The count of votes indicates the customer's taste and hence helps in creating his profile.

The polling history (diggs) is already publicly accessible in most web sites. Visiting any buyer profile, you can see all the write-ups that user voted for. Then you could assume what fascinates that client.

While number of these web sites claim not to leak your confidential information but still they feel free to do anything and everything with the precious information unobstructedly.

Large web search engines & high portals that can collect this type of personal information all come beneath massive common inspection regarding the safe guard of this kind of info, but still mundane bookmarking web sites stayed below the radar.