I like it - quick, easy/simple to use, I was/am working on something similar for PM purposes (after something very basic, tracking multiple projects, tasks/blockers within projects etc. for 1-2 users)
Meteor.js looks amazing, if they come out with auth I may re-write it again with sharing tasks. Other than that I plan to keep polishing and adding features.
What are your future plans for Tasskr?