Many of the comments we leave on blogs amount to little more than "I agree" a new service seeks to make these quick comments easier and quicker. I'm trialling it, you will see the buttons below. I suspect that the categories may be too uniformly positive to be helpful... but we'll see. ClickComments
is an interesting idea, and anything that gives blogging back some of the interactivity between author and reader that used to be such a feature of the medium is to be encouraged!