I'm not the author of this plugin but a dedicated user of this plugin (with my mods that I published on this forum).
I would like to bring this to your attention.
Remember that the Twitter REST API V1 will be retiring from March (5th) 2013 onwards and every plugin should be migrated to the new Twitter REST API V1.1 or use the authenticated embedded timeline widgets.
=> All this means that this plugin won't work anymore after that date because it uses the older REST API V1.
See this blog article for more info