In his front-page post, Kos argues that:
But wait, what's that reflected on her glasses, in her recently released video making the Arizona tragedy all about herself?
while showing a photo of Sarah Palin with a reflection in her eyeglasses:
There's one big problem: the reflection isn't from a teleprompter.
A teleprompter is located in front of or adjacent to the camera lens. Positioning a light source near the camera creates a reflection in the center of a person's eyeglasses.
The reflection in her eyeglasses isn't in the center. Its up on the corner. This means that its from something located well away from the camera lens. Its also homogeneous, which is typical of soft light sources, such as those sold by Kino Flo and other vendors. (The lights typically are equipped with a front diffusion panel so you don't see the individual tubes or LEDs) You can confirm the soft-light-source hypothesis by looking under her chin: there's a soft shadow which points away from the corner with the reflection. Such soft light sources are commonly used in photography and video production because the soft shadows they produce tend to obscure wrinkles and skin defects, and otherwise produce pleasing skin tones.
Sarah Palin may well have used a teleprompter, but the reflection in her eyeglasses isn't evidence of it at all.
There are also other ways of lighting people to produce attractive results, but that's another discussion entirely.
Update:
If you want to argue that Palin is using a teleprompter, the right way to do it is by pointing out photos of the teleprompter, not by making a bogus argument based on a reflection from one of her lights.