So I was at Best Buy yesterday where they have a Nexus S on display that seems to be on 24/7. At certain intervals, the phone seems to go through some demo program showing a few features of the phone, and at the end of that demo, the phone lands up on the central home screen again which has a Google Search bar across the top of the screen. Just for kicks I loaded Nena Mark and let the benchmark run, and while I was floating around in the green hilled countryside, spinning around that hut and watching butterflies fly around, I noticed that at the top of the screen you could still make out the outline of the Google Search bar. Looks like it spent so much time on the screen that it got burned into the display! I wonder if only Super Amoled displays do that or if that could happen to TFT and Super LCD's too?
Granted, this is a worst case scenario since that phone is on non stop, but it really is the first time that I saw a burnt in image on any display phone I have ever seen.
In other news....I am going with the Evo 3d, mainly because of the specs, but also because of the bigger screen. I am so used to my Evos screen, I just can't go back to anything smaller, and while 0.3" don't sound like much, there really is a significant difference.