Sometimes the government does good stuff online. The Social Security Administration has a website with data since 1990 on the most popular baby names, which you can slice and dice in interesting ways. For instance, it explained to me why Joshua (#3 nationwide) doesn't seem that common around here -- it's not in the Top 5 of Massachusetts. You can compare and contrast to the popular names in Britain.

RSS Digest is another service that lets you put an RSS feed on an HTML page without having to write any server-side code yourself. Useful.