IMMonitor Yahoo Messenger Spy Description:

IMMonitor Yahoo Messenger Spy allow you to monitor, block or record Yahoo Messenger conversations remotely, If your kids (or spouse!) are spending too much time chatting via Yahoo Messenger, or you suspect they're engaged in dangerous conversations, IMMonitor Yahoo Messenger Spy is a very simple way to find out and stop it. You can save all intercepted messages to HTML files for later processing. It's easy to use, and it will monitor all conversations without the use of client software installed on the remote computer. No one will know how their Yahoo Messenger conversations is being blocked or recorded and it will never stop working until you close it.