=== Các quyết định cấm gây tranh cãi ===
While blocking IP addresses responsible for anonymous, clear-cut vandalism is routine, many other uses of IP and username blocks are contentious. Where consensus proves elusive, such blocks are damaging to the community.
The most controversial blocks are:
* blocks of suspected "sock puppets" or "reincarnations" of banned users
* blocks of logged-in users with a substantial history of valid contributions, regardless of the reasoning for the block
blocks made under the [[Wikipedia: Blocking policy# Disruption| disruption]] provision of the blocking policy.
* blocks that, while possibly wise, lack policy basis.
Once you are convinced that a block is warranted, the recommended procedure for controversial blocks is: