Are dustproof screen protectors for real? With search engines, I can find supposedly dustproof screen protectors for sale?
e.g.:
http://www.amazon.ca/Clear-Scratch-Resistant-Screen-Protectors/dp/B003JBRSXY
http://www.amazon.com/Apple-iPhone-Protector-Washable-Resistant/dp/B00A2A0D7S

Do these screen protectors actually repel dust? Do they actually end up less dusty than other screens/screen protectors?
The point of these protectors is not to keep dust off the screen protector but the device. They are Scratch/Dust resistant. With all protector, they will get scratch, your device will not. That is what they are say, not that it will help your screen, but your device.