> **Possible Duplicate:**  
> [Conferences to go to 2011 Edition](http://meta.serverfault.com/questions/1089/conferences-to-go-to-2011-edition)  

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I would like to know your opinion on this subject and build a list of sysadmin-related conferences and events worth attending world wide.

Which ones have you attended? Do you recommend them? Which ones would you like to attend? Why?

Help building this list.