Forum Moderators: phranque
One of the biggest things is page load time. If your page takes forever to load, many users won't be around to even form a first impression.
Once they are able to access the site, many will form an opinion within a couple of seconds.
Don't know how scientific this type of data may be, but I think the small timeframe (2-7 seconds) is true.
Researchers found that the brain makes decisions in just a 20th of a second of viewing a webpage.