You posted this a while back, however wanted to inquire. It seems like you were looking into overlaying data on top of a live stream. I'm working to develop overlay technique as well on top of data. I recently attended a 2nd app developers group w/LG Smart TV presenting. The gentlemen shared it was illegal to overlay on top of content / live TV stream. I shared that Yahoo TV has a widget that already does that where you can configure the tool bar to reside top, bottom, left or right side of TV screen. (Dont think LG Smart TV has the Yahoo TV app). In any case have you looked into or know if by developing a app that overlays on top of content / cable broadcast that violates The Digital Millennium Copyright Act. The gentlemen from LG shared that overlay would be in a violation. I found that strange when Yahoo TV tool bar and ESPN score center app does an overlay as well. Please share your thoughts on what you've learned.