The Usability Working Group (UWG), along with our 2 fantastic and hardworking interns, is spending the summer conducting usability research on MTagger. We started by doing a heuristic evaluation and cognitive walkthrough. The goal for these evaluations was to reveal a preliminary set of issues pertaining to the usability, functionality and aesthetics of MTagger and to facilitate prioritizing further benchmarks. This report is now online.
We've also completed a "guerilla" test and we're in the process of conducting interviews and preparing for formal user tests and a survey. Reports for those studies will also be put online when they're done.