Real quick note to let you know that over the weekend, I released new code that is GPLv2, relating to WordPress export format (WXR). The code and details are here and I’d love to get some input and contributions of other export classes. I’ve included a (yet undocumented) Expression Engine exporter as well and will back port some of my previous exporters to use this class as well.
So, if you’re a WordPress hacker, or if you just want to help people move to WordPress and have some coding skills, half the battle is already fought. Check it out.