https://twitter.com/nacin/status/319508408669708289

This post tests WordPress' Twitter Embeds feature.

http://wordpress.tv/2009/03/16/anatomy-of-a-wordpress-theme-exploring-the-files-behind-your-theme/

Posted as per the instructions in the Codex.

http://www.youtube.com/watch?v=SQEQr7c0-dw

Learn more about Embedding Youtube in WordPress.