Lately I get the impression fewer people use clamshell phones than in the past. Even in the US it seems to me that when I was last there I saw more people with Blackberries running around and happily typing away on the keyboard than people still using a clamshell phone. So why? Could it be that the clamshell format is great for voice calls, i.e. quite sexy to open it up, but does not lend itself very well to text or web based applications? The smaller screen of the clamshell vs. sliders and the act of opening up the phone to check for messages, send a quick sms, e-mail or surf the web might just be that tiny little bit too much these days!? What do you think, what are your observations?