Android or iPhone/iPad plus WordPress
If you have a new smartphone, you may find that it is the ideal solution to BLOGGING from wherever you are. All you need is a WordPress blog (self-hosted or on wordpress.com) & either an Android or IOS phone.
Using the appropriate app, you can create and manage comments, posts, & pages on one or several blogs. The applications are available from the appropriate markets.
If you have an iPhone or iPad, check out this page for more info of what you can do. http://ios.wordpress.org/
For Android devices, the link even has a demonstration video.