Networking and Socializing has become essential in blogging today to increase the regular readers and connect with them. So, you might be interested to display your online status in your site or blog. If you are a user of Yahoo Messenger then you can do so easily.
Im Online
How to Display Your Online Presence?
Displaying your online presence from Yahoo is very simple and all that you have to do is add two lines of html code. This will display images stating whether you are online or offline. When the user clicks this image, it will open a new chat window through which any visitor can Instant Message. Even if you are not online, still the visitor can send the message and you will be able to view it when you sign in next time.
Note: This will display your Yahoo ID, so to protect your privacy you may opt to use a separate Yahoo ID for this purpose.
You can also embed this code in message boards and forums to display your online presence apart from homepages and blogs.
http://messenger.yahoo.com/addpresence.php