How To Use Them
Using the Google Ajax libraries on your own site is quite easy, and you can do it in a number of different ways.
Normally, you would download the latest and greatest version of your chosen library and upload it to your site. Here is an example using the MooTools.
You can include this via Google using the following.
If you are working on a development server you can also include the uncompressed version so that you can see where any errors are coming from.
If you want to download version 1.11 instead of version 1.2.1 by changing the folder:
You can also use the google.load() function to include the library you want with a single function call.
Ease Of Use
Don't Use On Your Intranet
Word Of Warning
For more information on the different libraries available take a look at the Google Ajax Libraries page.