Top definition
Someone who spends most of their time on the computer either instant-messaging, updating profiles, looking at other people's profiles, and playing games online to the point where it becomes obvious that they have nothing better to do with their life than sit in front of their computer.
"Wow, look at this! Lily's been online for 10 hours straight! She's such an online obsessor."
by Vickie T June 14, 2008
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