In this new tutorial on the IBM developerWorks website, they show you how - with a little simple HTML and PHP - to integrate functionality from the YouTube API into your site.

The YouTube video sharing site allows Web application developers to access public content through its REST-based developer API. [...] This article introduces the YouTube Data API, demonstrates how you can use it to browse user-generated video content; access video metadata, comments and responses; and perform keyword searches.

They help you get started by outlining the format that the YouTube messages use (Atom feeds) and how to run a query against the API and return back the custom data for things like video categories, popularity and the results of keyword searches.

Nick Halstead has pointed out a website, written in PHP he's created to help make a little bit of sense out of the links that go flying past in your twitter client - tweetmeme.

What is it? It tracks the public timeline from twitter and picks up any links that get posted. It then follows each link to find final destination and then categorizes the content into blogs / video / images / audio. This project really shows what is possible using PHP if you know what you are doing.

Most of the work was done by another developer, Stuart Dallas as one of four that worked on the project together. It's written in PHP5 and uses only about 20 PHP files to get the job done. You can also check out the launch post over on tweetmeme's blog for more information on the service.