Not long ago, Leslie Stevens-Huffman wrote about how you can makeover your online profiles before starting a job search. Her main point:

Eliminate old baggage that could hinder your search and engaging privacy settings that may prevent employers from viewing embarrassing information.

Now, here's a website that helps you do just that: Reppler. The name came from the idea that a small pebble can make big ripples to your reputation. The service tags content on your Facebook wall or news feed that employers might consider in appropriate - things like drugs, alcohol, adult, um activities and the like. You can tell Reppler which categories you want monitored and how you'd like to be notified if anything's found. Reppler's free but now only searches Facebook. Its developers tell me that a paid version is on the way. Among other things, it will add capabilities for other social networks.