I noticed this story on one of my newsfeeds. Looking into it, it looks like BOTH Ardupilot and Blimpduino were listed as "Make Online Open Source Hardware 2009" projects. Most notably, ArduPilot was listed first in the UAV subsection, with the BlimpDuino being listed second.
UAV SPecific page: here
, main page here
...noticed that they describe the ardupilot as the blimpduino though...
If anyone's posed this so far, feel free to remove this post.