While many travelers are able to keep journals on their trips, it is harder for most to update a blog from the road. It's one thing if the bloggers find themselves near a cyber cafe in, say, Amsterdam, but there are not many Internet connections in Outer Mongolia or the Amazonian rainforest.
The other hitch is that--aside from professional travel writers and the lucky recent college graduate roughing it around the world--few people travel enough to provide material for a blog. Of course, many executives and sales people spend far too much time on the road but, between preparing for meetings and dashing to catch a connecting flight, they usually don't have the time to devote to blogging.
Travel blogs reflect the linear nature of travel itself. There is a beginning, middle and end to any trip. Few people travel ceaselessly (although it might seem like that to some). Many of the best blogs we found, therefore, centered on a finite goal--a year abroad, a walk for charity, a circumnavigation of the globe. Some bloggers, however, had already reached their destination--or run out of money--and were no longer eligible to be included.
The best travel blogs provide their readers with voyeuristic adventure. The people who write them are going to places and doing things that most of their readers only dream of--so far, at least. One of the great things about blogging is that it makes people realize that anybody can do it.
-Christina Valhouli, Forbes.com