yahoo invisible detector

[klenshin]

hello
there are some site in internet that they can find your yahoo id status such invisible or offline or online
is there a way that these sites can not my yahoo id statuses?
how i can be invisible from these sites
http://www.google.com/search?hl=en&q=yahoo+invisible++detector&btnG=Google+Search&aq=f&oq=

[kpac]

You can't. It uses what's called an API to check whether a particular user is online or not, and is available to everyone.

If you don't want to be seen online, then just don't sign in.

[klenshin]

how do these sites work
how they can check yahoo statuses?

[kpac]

Like I said, it's an API.

Wikipedia

More info

Even more

[Kurtiskain]

Some of them used to work by forcing/initiating a conversation connection with you, if the connection was made, it would immediately terminate it and then it would report a online status.

However if you set your account so only those in your contact list can see your online status, it will always return offline.