Wikipedia

It bills itself as "the free encyclopedia that anyone can edit", and while that's true, reverting people's edits is really easy, and so is blocking users or IP addresses. Not everyone can do that. Who decides who can and who can't? Another hierarchy of privilege - which can be revoked if someone's decisions are deemed 'out of line' with the official narrative. Its reliance on "mainstream sources" further echoes the pattern of commercially-controlled media the world over, so at least on commercially or politically sensitive topics, Wikipedia is not as radically unbiased and fair as it purports to be.

• Wikipedia - "The free encyclopedia that anyone can edit"
• WikipediaPlus - A tool to supplement Wikipedia with content from alternative sites such as this
• The problem with Wikipedia - Wikispooks take on why an alternative voice is needed
• "When a primary source is good enough", discussion about Wikipedia admissible criteria