I just installed Blogsy on my iPad.
It seems like a very nice way to create Blog posts on the iPad, with easy facilities for including images and video links in posts. I am hopeful that the ability to create blog posts when offline, and then finalise and post them later, will help encourage me to blog more as I travel.
One other reason to choose Blogsy is that it supports IBM Connections, so I can use the same tool for blogging inside IBM as I use for blogging externally.
If you use Blogsy, let me know what you think of it. From my limited experience (of creating this one blog post) it looks great!