Its more due to the brand association people have with the .com domain. When you're telling friends about sites "I found this great site, its called facebook"

Its more due to the brand association people have with the .com domain. When you're telling friends about sites "I found this great site, its called facebook" - for those people not in the know, the natural thing people do is to use the .com extension. It's also why the .com domains command a higher premium on the domain name aftermarket.