Buzzu is an online service which helps to detect the status (online , oflline, invisible) off users on Yahoo! Messenger. Yahoo! Messenger has a feature that users can use it to hide from others and get invisible. So offline people can actually be online but in invisible modeby changing their status to invisible. This website’s purpose is to detect them whether they’re online,offline or invisible.
How should I use this site?Just enter the Yahoo! ID of the victim that you want to scan in the white box and click the return button on your keyboard or the search button.
How can it detect invisibles?
Our site is using Yahoo bots scripts that are connected to Yahoo! Messenger servers and use a bug in the Yahoo! Messenger protocol to detect invisible and offline users.
Why does Buzzu show people online when in reality they are offline or it shows them offline when actually people are online?
Some have adjusted in their YM to be “Invisible” and chosen just a few IDs for who to appear Online. Those who proceed like this are detected by Buzzu as being invisible.
Others have adjusted in their YM to be “Online” but they selected the following option: “Appear permanently offline” only for some of their buddies. These people, even if they are invisible for those who are searching for them, are in reality Online.
Can I check the IDs I do not have in my list?
Yes, BuzzU is capable of detecting whether status ( offline – online – invisible ) of any ID  even if you do not have it on your own Yahoo messenger list, you just need a valid Yahoo Messenger ID.
Do I have to pay for this service?
NO, the Yahoo Messenger Status Scanner is FREE for everybody. We therefore ask you to invite all your friends to use it.
Can you find Yahoo IDs’ passwords?
No,This site is only for detecting the status  offline – online – invisible of an Yahoo Messenger ID.
I want to check a list of Yahoo IDs,what should I do?
We are also working on this feature to check more Yahoo IDs’ status and we will add it soon.
How many Yahoo IDs can I check per day?
There’s no limit for checking Yahoo IDs and detecting invisible for now.
I scanned a Yahoo! ID and it answered me “Our server is busy”.
Scan that Yahoo! Mess ID for more times and if the problem persists, it means we are either upgrading our system or our or Yahoo’s servers are busy, so you should try a few minutes later.
More info …:
Our site is accurate 99% of the times by the way It’s better to scan a Yahoo  ID for more than once to be sure about his/her status.
If a Yahoo Messenger ID disconnects,his last status will remain for maximum time of 10mins,So when you see someone invisible,maybe he’s been disconnected so just scan him again in a few minutes.