I have used an Asus netbook on tour. It worked very well for email, photos and blogging, but all the associated cables were quite heavy and bulky so now I just use the iPhone. There's a WordPress ap for blogging and I like that I can use either 3G or WiFi to connect. Now that the keyboard is in landscape it's easy to write long blogs etc. I'm also looking at getting an Amzer solar backup battery for it. The only drawback is the iPhone camera which isn't very good.

Someone mentioned the iPad. I wouldn't take it because it doesn't have a camera or phone. Today there should be no need to take multiple electronic devices, unless you want to take really good photos, then I can see the argument for a good camera. There are some neew devices coming out soon that are like large smart phones. They have 5 inch multitouch screens and might be the perfect combination of size and functionality for touring. The Dell mini-5 seems to be the one with most buzz.