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  2. Facebook Query Language - Wikipedia

    en.wikipedia.org/wiki/Facebook_Query_Language

    Facebook Query Language (FQL) is a query language that allows querying Facebook user data by using a SQL-style interface, [1] avoiding the need to use the Facebook ...

  3. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    This class of status code indicates the client must take additional action to complete the request. Many of these status codes are used in URL redirection. [2]A user agent may carry out the additional action with no user interaction only if the method used in the second request is GET or HEAD.

  4. 2021 Facebook outage - Wikipedia

    en.wikipedia.org/wiki/2021_Facebook_outage

    CNBC reported that the outage was the worst experienced by Facebook since 2008. [21] During the day of the outage, shares in the company dropped by nearly 5% and Facebook CEO Mark Zuckerberg's wealth fell by more than $6 billion. [21] [22] [23] According to a report produced by Fortune and Snopes, Facebook lost at least $60 million in ...

  5. HTTP 404 - Wikipedia

    en.wikipedia.org/wiki/HTTP_404

    In code 404, the first digit indicates a client error, such as a mistyped Uniform Resource Locator ... Query string sequence denied. 404.19 – Denied by filtering ...

  6. AOL Search FAQs - AOL Help

    help.aol.com/articles/aol-search-faqs

    A search engine operates by performing specific functions When seeking online information, many people turn to search engines like Google, Bing, Yahoo, or AOL Search. These search engines function as digital indexes, organizing available content by topic and sub-topic, much like an index in a book.

  7. Facebook Graph Search - Wikipedia

    en.wikipedia.org/wiki/Facebook_Graph_Search

    Facebook Graph Search feature. Facebook Graph Search was a semantic search engine that Facebook introduced in March 2013. It was designed to give answers to user natural language queries rather than a list of links. [1] The name refers to the social graph nature of Facebook, which maps the

  8. HTTP 403 - Wikipedia

    en.wikipedia.org/wiki/HTTP_403

    A 403 status code can occur for the following reasons: [3] Insufficient permissions: The most common reason for a 403 status code is that the user lacks the necessary permissions to access the requested resource.

  9. Web beacon - Wikipedia

    en.wikipedia.org/wiki/Web_beacon

    Web beacons embedded in emails have greater privacy implications than beacons embedded in web pages. Through the use of an embedded beacon, the sender of an email – or even a third party – can record the same sort of information as an advertiser on a website, namely the time that the email was read, the IP address of the computer that was used to read the email (or the IP address of the ...