###License Compatibility
(This has [been a problem][1] and serious [point of debate][2] in the past.) All plug-ins should be licensed via GPLv2 and only contain code (external libraries) that are compatible with that license.

  [1]: http://wordpress.stackexchange.com/questions/377/gpl-and-plugins
  [2]: http://wordpress.stackexchange.com/questions/5/am-i-allowed-to-license-my-wordpress-theme-under-the-agpl