While the tool is interesting it really only shows a portion of what a resume needs to cover. From JobWeb a resume is:-
a one or two page summary of your education, skills, accomplishments, and experience. Your resume’s purpose is to get your foot in the door. A resume does its job successfully if it does not exclude you from consideration.
Things I Can Do seems to only focus on the skills and excludes the accomplishments, experience and education. It allows user to tag their skills provide a brief summary, maybe this could be used to highlight how the skills has been used, and allow people to rate and comment.
It is a good start on building out a framework for the online resume but seems to be focused more on the tagging concept than building an effective job seeking tool.