1. 2010-05-23 [Bug 198288] [Facebook plugin] [usability]: Jakob Lehmann 2. 2010-01-12 [Bug 198288] [Facebook plugin] [usability]: Roman Jarosz 3. 2009-07-09 [Bug 198288] [Facebook plugin] [usability]: Duncan Mac-Vicar 4. 2009-06-30 [Bug 198288] [Facebook plugin] [usability]: Duncan Mac-Vicar