6d026765_Plugin_YAML___BukkitWiki_Attributes_Notes
[Attribute] loadbefore [Required] no [Description] A list of plugins should be loaded after your plugin. [Example] loadbefore: [OnePlugin, AnotherPlugin] [Notes] 
The value must be in YAML list format (See http://en.wikipedia.org/wiki/YAML#Lists ) Treated as if the listed plugin soft depends on the specifying plugin. Use the "name" atrribute of the desired plugin in order to specify the target. Your plugin will load before any plugins listed here. Circular soft dependencies are loaded arbitrarily. (See: Wiki: Plugin_Dependencies)
Plugin YAML - BukkitWiki
Notes