I have and its a great service created by @davemccoy. I believe it started out as just a post and @davemccoy upvoting comments that didn't reach the $0.02 threshold but now see a bot has been created.

I wrote an article on the threshold called... Your UPVOTE Ain't Worth SHIT . I been very vocal about he 0.02 threshold and been trying to spread the word. For those who are unaware .. you do not get paid unless your comments reach $0.02.

Read more about @dustsweeper here

Awesome contest by the way. I will be entering it tomorrow :)