A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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For questions about the web interface to the Dropbox cross-platform file synchronization utility. Questions regarding installed Dropbox applications on devices should be asked on other SE sites.
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a free web service where people publish a weblog.
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Messages or alerts that let you know that an update, service change or some other activity has occurred
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Microblogging service that allows text, video, images, links and quotes
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A finite set of one or more keys that invoke a software or operating system operation when triggered by the user.
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An instant messaging service and software application by Facebook. Originally developed as Facebook Chat.
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Gathering of Facebook users around a topic, personality or event to share and discuss said topic
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For questions about G Suite, a suite of applications for organizations from Google. (Formerly known as Google Apps.)
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For questions related to preventing unsolicited junk messages 'spam' from reaching the intended recipient.
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a platform for building and deploying mobile applications specifically designed for low-resource settings.
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Full or summarised text format published by a website that allows users to subscribe or follow a website without necessarily having to revisit the site to see the updated content.
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a service for managing all of your photos, introduced May 29,2015. This tag is for questions about the web version of the app.
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for spreadsheet questions where the question or answers involve an in-the-cell worksheet function.
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Business and career-related social networking service
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Questions about Google Apps' web-based email, part of a suite of web apps for custom domains.
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A free email service by Yahoo!. It currently supports POP3 and IMAP.
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Or Hyperlinks - a reference to data that the reader can directly follow, or that is followed automatically.
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Questions specifically about the use of Amazon.com. If your question is about an order you've placed with Amazon.com, you need to contact them directly.
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Styling information beyond the minimum of semantic elements: colours, styles (boldface, italic), sizes and special features.
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an instant messaging and video call service that is embedded in multiple Google web services and can be use as a web and mobile standalone app.
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Either of services which play, edit or record still images in successive motion or the transmission of such in real-time
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Combines a Facebook user's wall and profile updates into a single default view shown in reverse chronological order
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A free online diagram drawing application. Please only ask questions about the web version of draw.io; if you're using one of the desktop applications, ask your question on Super User.
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Images and graphics that you upload and/or share with others. Tag along with a specific web app if it relates to use in that service. Prefer instead more specific tags where appropriate and already av…
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a free online encyclopedia that anyone can edit.
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Free website analytics tool from Google. May be more suited to Webmasters Stack Exchange.
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a free, cross-platform team collaboration tool. Slack also provides a web version accessible from a browser. Slack's features include real-time messaging, archiving, search, channels for team…
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Allowing another user access or providing a means to better spread the word of your service or content.
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should be used to differentiate questions about the importation of a range of data from other questions on this site. Use when the topic is the IMPORTRANGE function. Should generally be used …
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For questions specifically about charts/graphs created in Google Sheets
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Do not use this tag! Google Inbox was shut down by Google on April 2, 2019. This tag was for questions about the web interface for Inbox by Gmail, also known as Google Inbox.
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generally a verbal or written remark often related to an added piece of information, or an observation or statement. These are usually marked with an abbreviation, such as "obs." or "N.B.…
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Open source blogging software powered by PHP and MySQL. WordPress development questions are off-topic on Web Applications but might be asked on WordPress.SE.
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a series of rules that defines the action(s) that authenticated users can do.
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For questions regarding the privacy of personal information on Facebook.
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a web application that connects the APIs of multiple popular web applications to allow actions to be taken on a destination site when an event occurs on a source site.