I often see a chat dialog box in some friends' blogs, which allows users browsing the site to chat. In my opinion, this function is like chicken ribs - who would know which people are browsing and which people can chat? However, today while browsing LoveCherry's blog, I found a Live Messenger chat dialog box in the left sidebar, which suddenly sparked my interest. But it seems that not many people know about this thing, so I had to resort to using a search engine (I want to say one more thing here: because I often receive questions like "Where can I download the ASP.NET AJAX framework", so I suggest those friends must develop the habit of searching first before asking). So let's take a look at what this specific thing looks like.