They offer lots of information for Ajax Developers, plus a selection of pre-made FREE "web widgets to enhance your blog or website".
Here's an example -- a widget that AUTOMATICALLY searches for YouTube videos on the topic of "Education". CLICK TO SEE THE WIDGET EXAMPLE. LINK-NOTES: Clicking on the link will open a new window on my site's page about Web 2.0. From the example, clicking a video's thumbnail will take you to the YouTube site. Close that browser window to come back here. Thanks!