Web Users Judge Sites Instantly
Ant writes "This Nature.com news article reports that potential readers can make snap decisions in just 50 milliseconds: 'Like the look of our website? Whatever the answer, the chances are you made your mind up within the first twentieth of a second. A study by researchers in Canada has shown that the snap decisions Internet users make about the quality of a web page have a lasting impact on their opinions...'"
I think these are the two big determiners- if the first thing I see are 20 banner ads, I'm looking elsewhere. If I can't easily see how to get to the data I want, I'm looking elsewhere. These are easy to tell very quickly (ads on 1 glance, navigation by looking for a left column or top navigation bar). Most sites that have people leave that quickly fail one of these 2 tests, I think.
I still have more fans than freaks. WTF is wrong with you people?