I used to think that this blog had an audience of one -- me. Not even my mom reads this blog. However the guys from Cloudera stumbled upon a recent post I had written about getting Hadoop running in EC2, and pointed me to their EC2 setup scripts, which pick up where src/contrib/ec2 left off. They let me write up a guest post on configuring and running a MapReduce job using their scripts. Check it out!