No it's not 1 Apr. Joel Spolsky (Blog - @spolsky) announced recently he is retiring from blogging 17 Mar 2010.
Reading Joel on Software always makes me think. Mr. Spolsky pioneered a writing style. Along the way he empowered developers, encouraging them to speak up about the manifold misconceptions of our trade.
I will miss Mr. Spolsky's writings. I wish him well in all his endeavors.