From the announcement:
WP Pingdom brings the power of Pingdom’s automatic site monitoring to your WordPress blog, allowing you to include your uptime statistics on your blog in textual or graphical form. The remote calls to Pingdom and the graph image are cached, so the Widget should not affect your site’s performance.
Sounds really cool, doesn’t it?
We’re happy to see such good use being made of the Pingdom API. Thanks Elliott!