Google Talk

Google Talk is an instant messaging service provided by Google.

The underlying protocol is actually Jabber, which Miranda currently supports.

Simply download the Jabber Plugin, and set it up for Google's server.

Here is a post from the forums, describing how to set it up:

Don't forget, if you already have a normal Jabber account, you can use both at the same time, by using the Multiple Accounts method.

Read more in Google's help center: "How do I configure Miranda for Google Talk?"

More information on Google Talk is available on the Google Wikia.