Matt Sampson's got a blog about making a LightSwitch HTML App that queries data from the one and only Stack Overflow by attaching to their very cool public OData Service.
(Now you can use a LightSwitch app to keep track of all the LightSwitch related posts on Stack Overflow!)
You can check out the blog post here - OData Apps in Update 2–Querying data from Stack Overflow
I published the HTML App up into azure if you'd like a preview of it - StackOverflow App.
Thanks all - Matt Sampson