User Agents

In computing, a user agent is software (a software agent) that is acting on behalf of a user.For example, an email reader is a mail user agent, and in the Session Initiation Protocol (SIP), the term user agent refers to both end points of a communications session.In many cases, a user agent acts as a client in a network protocol used in communications within a client–server distributed computing system. In particular, the Hypertext Transfer Protocol (HTTP) identifies the client software originating the request, using a "User-Agent" header, even when the client is not operated by a user. The SIP protocol (based on HTTP) followed this usage.
Posts about User Agents
  • When To Optimize Alt and Title Text for Images

    … specifies an alternate text for user agents that cannot display images, forms or applets. For example, the user agent Googlebot cannot “see” images directly. Instead, it relies on the information in the alt attribute to determine what the image is and what to display in search results. Here’s a good overview on the importance of alt tags from Matt…

    Nicolette Beard/ Raven Blogin Social SEO Google- 6 readers -
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