A user is an agent, either a human agent (end-user) or software agent, who uses a computer or network service. A user often has a user account and is identified by a username (also user name). Other terms for username include login name, screen name (also screenname), nickname (also nick), or handle, which is derived from the identical Citizen's Band radio term.
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How do we optimize for site speed at TNW? What do we look at, how do we measure improvements and what's next for TNW in measuring ...