Ever wondered if ur friend is invisible in yahoo and hiding from u? then here is the way to find out if ur friend or foe is invisible and online. first method: Go to http://www.xeeber.com/ and enter the yahoo user name and it will show if that person is online,offline or invisible, this has been successful everytime i tested.second method: go to http://www.buddy-spy.com/ and download the software and install it. it has option of finding if the yahoo user is in which chat room and if his webcam is on/off but its not working correctly always, detects sometimes and doesnt detect sometimes. but useful to check bulk users. tweak the settings a bit and u will know which settings works correctly for u