I got a new phone at the weekend, a Nokia 6630 with 3G and a quite nice megapixel camera. To this I've added Lifeblog which is super, it collects together your pictures and messages placing them on day by day views. From this simple interface you can then select and directly post to TypePad or Flickr (howto), with others in the pipeline. The combination has really encouraged my desire for mobile blogging. I neither know nor care about the Windows application.
One other clever thing is the data transfer application which ships with the 6630, this lets you copy across your contacts and pictures from your old Nokia phone, a 6600 in this case. Excellent idea, it even copies the application to the old phone over Bluetooth. It'd need to do until Apple can sort out iSync with my 6630, it seems it doesn't even work on Tiger yet. Further thoughts on the 6630 to come later in the month, suffice to say I thought I was happy with the 6600 and only upgraded as it was free, but it is a marked improvement.
The PC app is great for when your phone memory card becomes full - it moves all but ones marked 'favorite to hard disk. You can also post to Flickr/Typepad from the PC version to save on the mobile phone bill.
But if you've got a Mac you're admittedly a bit screwed.