'Buddy Spy' is a simple, but highly effective software. It allows you to check on your friends when they appear to be offline or in 'Stealth mode' on Yahoo! Messenger. You need to choose your connection settings and then you can login using your ID and password. You can even choose a bot status. Then you can check on your friend's status. You can check a single ID or an entire list of IDs. The scan results that the program displays are the username, status, web cam status, chat room, and time of the scan. The scan types that you can choose from are 'Invite Packets', 'Peer-to-Peer Packets', 'Avatar Packets', or 'Web Check'. If somebody tries to lie about their status, you can keep track of your scans in the scan history section.