My friend Monika just pointed out Matt Mason's blog to me, mainly due to his nice praise for The Building Coder. Thank you, Matt! And thanks to Monika for pointing it out.
Matt covers a variety of CAD application development topics, with the main focus on Revit, judging from the current tags:
He is Director of Software Development at Avatech Solutions and will be presenting a class on Advanced Revit API at Autodesk University.
I'm looking forward to seeing you there soon, both you Matt and you dear reader!