Rated 4 out of 5 stars
I nice simple and informative Do Not Track extension. I would prefer it if there was an option to add the indicator to the awesomebar a'la Shareaholic et al.
Another shortcoming is that it's rather difficult to determine whether one should block a given tracker. I suppose AVG compile a white/blacklist for this purpose, but it would be nice to have a little more contextual information about each tracker (what are they using my data for, are they essential for certain site functionality, etc).