I don’t know what is happening with blogs.adobe.com but a lot of pages seem to be down or missing. I can’t find anywhere to download Paul Williams’s Observe tag and Alex Uhlmann’s blog about it seems to be down as well.
I’ve uploaded them here so if you’re wanting them grab ‘em quick.
I worked with Paul and Alex on my last project at Morgan Stanley. Both are very talented developers and good fun to work with.