Hiding your online Presence on Yahoo messenger

Yahoo messenger is a great tool for connecting with your friends on the internet. You could do more that just chat like sending texts and voice mail but Yahoo messenger also allows you to send files such as pictures, videos and much smaller files using the software which you can get from messenger.yahoo.com
The great thing about Yahoo messenger it that it allows you to know when your friends are online, buzz them and start chatting. The basic things you could do in an office or a classroom, you could equally do with Yahoo messenger.

Hiding your online Status
You could also use Yim's stealth settings to hide your online presence if you don't want your contacts to know that you are online or available for chatting. To enable this, just click on the messenger button when messenger is opened and:
My availability --> Invisible to everyone.
That would make you invisible to everyone in general. However if you just want to be invisible to a particular contact, disable that and then down to where the contact is listed and:
Right click-->Stealth settings-->Appear Permanently online to user