Install a Multi IM Chat widget for your wordpress blog.
The IM Chat application enables visitors to log into their favorite IM clients that include facebook, g-talk, MSN, Yahoo, and AOL, chat with their online buddies and invite them to visit your website.
Following is the list of features of the plugin.
Increase time spent by the visitors on your site.
Let your visitors share what they are doing on the internet with all of their online friends.
Broadcase a chat message to all the friends.
One to one chat with online friends.
Incoming chat message notification like gmail when you are not on the same tab or browser window where you are logged in.