In Internet culture, a lurker is typically a member of an online community who observes, but does not actively participate. The exact definition depends on context. Lurkers make up a large proportion of all users in online communities. Lurking allows users to learn the conventions of an online community before they actively participate, improving their socialization when they eventually de-lurk.
Lurkers are referred to using many different names, including browsers, read-only participants, non-public participants, legitimate peripheral participants, or vicarious learners.
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