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Social networks that provide their services without user fees make a profit by selling advertising.

This is often done through behavioral advertising, also known as targeting.

This practice is appealing to marketers because targeted advertisements are more likely to result in a purchase by a viewer than comparable non-targeted advertisements.

This can be anything from your username to individual posts, to your entire account.These kind of “public” posts are not blocked behind any kind of access restriction.There are, of course, also rogue applications, which do not follow the policies and terms that govern applications.Some facts to keep in mind when considering using third-party applications: As a general rule, use caution when using third-party applications.Anyone, including strangers, can view whatever is posted as “public.” However, there may be other data that you share publicly without realizing it, and there are less obvious ways that your information may be treated as public without your permission, including: Advertising Your own publicly posted content isn’t the only way that you can be tracked, and advertisers are very interested in the information that can be gathered by tracking a user’s actions online.

Some of the purposes of analysis may include: Behavioral advertising is the term used to describe the practice of tailoring advertisements to an individual’s personal interests.

Law enforcement agencies can and do monitor social networks for illegal activity.

During an investigation, law enforcement will often turn to a suspect’s social network profiles to glean any information that they can.

Remember that it is difficult to control what information they are gathering, how they might use it, and who they will share it with.

Government and law enforcement access Law enforcement and government officials can monitor social networks for valuable information.

To make these applications useful, social networks may allow developers automatic access to public information of users, and may even access some private information, when a user grants the application permission.