I hadn't thought about the brightness thing at all - until I read this thread!
Not an issue for me really.
I love Deep View - quite addictive! Just one thought about it Kris which you might wish to consider. I recently read Ethan Frome as part of the Mobileread book club. This is a very short book. I loved it and used Deep View to find background material. Just after I hit the button I realised that although the book was short, this version was part of a complete works set(thanks again Pynch) which was huge. After a few minutes I realised my mistake and that this might take all night to complete. Anyway there was no obvious way of cancelling the operation, so I had to close Marvin fully, and reopen it. Not a major issue but I am sure lots of people when playing with Deep View will find this out, so a small Cancel button might be useful .