I've noticed something while reading my daily blogs, a lot of code is just unreadable because most blog systems (blogger looking at you), screw up indentation, unless you wrap it in a pre tag (opening and closing are both required. This makes it readable for your readers! I've left comments on the blogs that didn't know this, and now they do.
This message is primarily for the Google Summer of Code students, but is useful to the programming community as a whole. When you post code, wrap it in a pre tag and be sure to close them when your code example is complete.