Nokia Nseries :: Using N8 With HDMI Out (have Big Screen App Installed) To Use BBC IPlayer?

using n8 with hdmi out (have big screen app installed) to use bbc iplayer (basically a web-based real video app, similar to Internet, but allows you to "catch-up" with previously aired bbc tv programmes in the uk).

i've started using my n8 upstairs, on my bedroom tv - so currently have no lan connections, and my n8 is the only way to watch programmes on iplayer around the house (can use my wii console for this purpose in the lounge).connectivity all seems to work ok, and manage to pair a spare wii controller to the phone to control it (big screen app functionality?).

the one thing i'm curious / concerned about is what's on my phone screen whilst watching iplayer on my tv over hdmi. normally you use the break-out / fullscreen option when watching iplayer on tv, so on my phone's screen, all the while i'm watching something, there's a web page in landscape, with a black box (about 1/3 of the screen size) of the video that's playing on the tv.

1. will this cause any damage, "burn-in" or overuse of my phone's screen to watch programmes on my tv for a couple of hours? have to say i'm not that up-to-date with usage best practices or things to avoid with things like amoled screens, just vaguely remember some concerns with plasma or lcd tv displays.

2. is there any way to blank my phone's screen whilst watching this app (bbc iplayer) on my tv? if i use the lock-key, the app stops / pauses.