I. Introduction
Social Web Applications (SWAs) have become ubiquitous in the cultural consciousness and daily lives of those of us privileged to be living in the digitalized world. SWAs connect users in online communities [27] who collaborate in creating or sharing social media (e.g. photos in flickr [36] or status updates and urls in twitter [38]). Such applications are now evolving beyond the desktop computing space to platforms like mobile phones and handheld devices (e.g. facebook [35] and twitter [38] have functionality allowing for updates from mobile phones). Soon SWAs will become even more prevalent as they are deployed widely across pervasive computing environments [11].