What is the best blogging software to use on a ppc mobile device?

Looking for software that will help me add entries to my yahoo 360 blog from my Sony Ericsson Xperia X1. Will making a word doc then copy and paste be fine or is there a piece of software out there to help me with this...?What is the best blogging software to use on a ppc mobile device?I've used a program called cellspin, it works with a number of blog sites, although I haven't checked to see if it works with yahoo 360