Yahoo Invisible Mode Detection...enjoy...

Buddy Spy
This software is 2 awesome..
Buddy Spy is the premier program for Yahoo! Messenger status checking. With Buddy Spy you can now bypass Yahoo! Messenger's Invisible Settings with ease. With its quick and intuitive interface Buddy Spy offers you the ability to see if your friend is truly online or if they are invisible. Not only does Buddy Spy offer you online checking, but it will also tell you whether your friend is in a Chat Room or even if their Web Cam is online!

"Buddy Spy is a User friendly , straight forward program , that I would have a hard time surviving without !! It helps Me stay in touch with Those that have to log in under invisible mode to keep from being bombarded with messages from Their Friends on Their list .

What's new?
New in Buddy Spy 2.2 is a Scan History, which keeps a log of all the users you have scanned. The log includes, the user name, online status, webcam status, chat room status, date and time, in an easy to read format. Also new in this version of Buddy Spy, is the Web Check. The web check is a new scanning method that will detect online presence, even if they are not using Yahoo! Messenger.
Download it from here
http://www.buddy-spy.com/files/BuddySpySetup.exe