|Yahoo Messenger Invisible Detector Online Website : eAskme|
You can also use Yahoo Doodle trick to check if your friend online or not. For this all you need to do is open chat and load doodle environment, if its load that means your friend online and if its not that means he is offline.
List of Yahoo messenger Invisible Detector Sites:Now we talk about personally verified list of sites to detect invisible users of Yahoo Messenger.
MySpytool:MySpytool is one of the popular yahoo status tracker site online. It also offers features like add 12 friends id and check their status. You can even check status upto last 24 hours of your friend. Registration is free here. After registration you can monitor upto 12 accounts.
See this : Free Multi Messenger Clients
YmDetector:YmDetector is also yahoo messenger invisible status detector site. It detect status of Yahoo user and also you can download yahoo avatar and one click chat. This is a well organized and most professional site. You can easily add many users then click on name to check status.
ImVisible:ImVisible allow you to check status of your invisible friend also you can search friend on facebook using yahoo id. Just enter id of friend in facebook friend detector and it will show you if your friend online or facebook or not.
There are more online tracker sites available. All of them work in the same way, so you can pick any one from this list as they are personally checked.
Do share your experience and suggestion in comments.