spent indulging an unusual interest can result in a deluge of further targeted marketing that may be unwelcome. Law enforcement, counter-terrorism, and espionage agencies can also identify, target, and track individuals based on their interests or proclivities on the Web. Social networking sites usually try to get users to use their real names, interests, and locations, rather than pseudonyms, as their executives believe that this makes the social networking experience more engaging for users. On the other hand, uploaded photographs or unguarded statements can be identified to an individual, who may regret this exposure. Employers, schools, parents, and other relatives may be influenced by aspects of social networking profiles, such as text posts or digital photos, that the posting individual did not intend for these audiences. Online bullies may make use of personal information to harass or stalk users. Modern social networking websites allow fine-grained control of the privacy settings for each posting, but these can be complex and not easy to find or use, especially for beginners. Photographs and videos posted onto websites have caused particular problems, as they can add a person's face to an online profile. With modern and potential facial recognition technology, it may then be possible to relate that face with other, previously anonymous, images, events, and scenarios that have been imaged elsewhere. Due to image caching, mirroring, and copying, it is difficult to remove an image from the World Wide Web. Standards Web standards include many interdependent standards and specifications, some of which govern aspects of the Internet, not just the World Wide Web. Even when not web-focused, such standards directly or indirectly affect the development and administration of websites and web services. Considerations include the interoperability, accessibility and usability of web pages and web sites. Web standards, in the broader sense, consist of the following: Recommendations published by the World Wide Web Consortium (W3C) "Living Standard" made by the Web Hypertext Application Technology Working Group (WHATWG) Request for Comments (RFC) documents published by the Internet Engineering Task Force (IETF) Standards published by the International Organization for Standardization (ISO) Standards published by Ecma International (formerly ECMA) The Unicode Standard and various Unicode Technical Reports (UTRs) published by the Unicode Consortium Name and number registries maintained by the Internet Assigned Numbers Authority (IANA) Web standards are not fixed sets of rules but are constantly evolving sets of finalized technical specifications of web technologies. Web standards