http://dl.dropbox.com/u/25782/sourceforge.html
Pretty eye-opening. What's clear is that the 'Other' category brings so much uncertainty to the data that it renders the data virtually useless.
http://dl.dropbox.com/u/6353242/hn/sourceforge-area-normaliz...
You can get a real sense for how large the 'other' datapoint is by looking at non-normalized view as well:
Instead we get time inverted, bar graphs, and no way to visually compare the operating systems.
Terrible article.
It took me a while to figure out the dates were MM/DD/YY. Even then, why is the day included? Are these per-day, and if so, why are they making sweeping generalisations about all of April? If they're just point markers why aren't they in line, and why are the bars separated?
It's great they managed to provide the full stats - in a completely uncopyable format. Let me break out tessaract. http://i.imgur.com/VDtUp.png http://i.imgur.com/nuKxl.png for (only marginally) more helpful visualisations
EDIT: warpdude's ones four hours ago and two comments down look nicer