Detect Yahoo Messenger Invisible Status with High speed Status Check Online.
Totally Free and without any installation. Most probably status will be correct.
And also without any server conjunction problems like other online checker.
www.4invisible.com is totally Free Online Yahoo Messenger Invisible Status Checker.
4invisible gives you the opportunity to detect the status ( Online, Offline or INVISIBLE )
of any yahoo messenger related id. Detector can be used at any time totally free.