How can I integrate "chat" into an ASP.NET MVC site?

I'd like to integrate chat into my site a开发者_JS百科nd am open to a solution like this site's, but am open to others if they exist.

What chat sites do you know of that can integrate into an MVC site?

I have used both the WebSync JavaScript and Silverlight API's. In your case you could use the JavaScript API from an MVC app. Creating chat with WebSync is really easy and works very well. WebSync is a highly scalable HTTP Comet/Reverse Ajax server. They even offer a offer a hosted service. It has a cost if you need to support more than 10 concurrent users.

Here's one project on CodePlex you might take a look at.