Dj saleem's blog

There is a simple trick by which you can find out who is invisible on yahoo messenger.And that person would not even know that you are aware of him/her being online.

Find the trick herehttp://www.ydetector.com/

or
simply download this software 1st log in into that software with ur yahoo id ,and search ur frnds ids to kno whethr they r ofline or online.
http://www.buddy-spy.com/download/now