Now that I have "free" broadband at home and at work with my Treo650 using this nifty Bluetooth solution, I've been experimenting more with Photoblogging from my Treo.
The easiest solution is to do so by Email and using Flickr’s Blog Via Email, it's free. In this example post on Eyeballs for Pharma, I took a screenshot from the Treo, saved it on to SD, then emailed it as a Photoblog using Versamail. The Subject of the email becomes the Title of the post, the Body of the email becomes the Body of the blog post and the images which is sent via an attachment is posted automagically. I have saved the special FlickrBlogyByEmail address in my addressbook so it's easy to look it up each time. I only wish Flickr would support multiple BlogByEmail addresses (for multiple Blogs) for each account (but then you could easily open other Flicr accounts I guess) rather than having to surf over to the Flickr site to switch Blogs.