Yesterday evening I've quickly written a
post about a little (but useful for me) tool that I've built to post on
my blog also when I'm out of office and I've not a pc on my hands.
I'm not a big expert on Smartphone development and the tool can be improved a
lot (expecially on the user interface), but my scope was only to have (in short
time) a tool ready to be used. Here a short review on how the tool works:
The application deployed on the Smartphone is a light and tiny application
(40Kb) that has a reference to a web service deployed on my server. When I've to
write a new blog post, I write it offline via the application interface
and I will be online (GPRS or WiFi) only when I have to post the text
on your blog (by pressing the Post button).
The blog posting process occours as follow:
the application calls the appropriate Web Service method, passing it the user
credential and the blog post content (title and text); next, the web
service internally uses the MetaWeblogAPI to translate the arguments in
a correct message and post it into the weblog (reachable via the API). If the
post is successfully entered into the blog engine, the post ID is returned to
the application (otherwise you have an error message).
That's all... 
P.S. Smartphone development is quite different from Pocket PC development,
mainly because you don't have all the controls that you can use on a Pocket. I'm
waiting for a Smartphone porting of other mobile blogging applications (like
Diarist for example, I've contacted the author in the past days
and something could be done), but for the moment I've my mobile phone blogging
solution on my device ready to be used and well functioning...