I got interested in it from some posts at reddit - they even have a subreddit for it which has some info - http://www.reddit.com/r/beadsprites/
I only started a few days ago, but here's a few I did that I thought turned out OK.


(my favorite ones!)


Picture didn't turn out great, but I think you can tell who they are. Cyan isn't done yet, he's missing a dark green that I don't have the right shade of.