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Wikipedia is probably the most dangerous procrastination tool on the net. There's not limit there, the rabbit hole just goes deeper and deeper.

• Fernicia 9y ago
  tvtropes should also be considered in this category.
  • krylon 9y ago
    Oh my, yes! I went there to look up one term, and before I knew it the entire afternoon had gone by. OTOH, I learned a lot that afternoon. Watching TV programs has never been the same.