In The Instant Messaging Demo, you learned that access and privacy filters can be used by end users to block Instant Messaging traffic or presence updates from certain individuals. Additional flexibility can be obtained by deploying filters that perform text conversion or block certain payloads that contain viruses. For example, an administrator can create a filter that blocks or converts obscene words in an instant messaging conversation. Other uses include text translation, rich text to plain text conversion, or domain level blocking. Sun Java System Instant Messaging provides a Message Conversion API that developers can use to create more complex filters that can be applied to the Instant Messaging Server. Learn more about API level filtering from the Instant Messaging product documentation (http://docs.sun.com/app/docs/coll/1309.1).