Maybe you've already heard about ASP.NET SignalR and how you can use it to do "real-time" web.
Or how it lets you easily push content from your server up into your HTML5 Client, or back from your client to the server.
But have you seen how you can make SignalR and LightSwitch work together???
If you want to know more, then check out this blog post from Matt Sampson - ASP.NET SignalR and LightSwitch.
Thanks all,
-Matt Sampson