facebook like button not work

My facebook "like" extension does not work properly. It only posts like URLs to walls. But I saw some on some blogs that when I like the post it will show up on my wall with the title and post content, including images. But on my blog it only shows URL. Please help me find the reason. I'm using .net blogengi开发者_如何学Gone: see this.

You probably have Like button extension but really want Like button widget.