Startups are just getting less interesting. Blogs in general would not be down, as they are a cheaper form of entertainment, which should be on the rise in a bad economy.
everything interesting has been done to death. Now the only innovation(and I don't mean ____ + ____ mashup) will come from companies with a ton of money to spend on research.
everything that can be invented in the garage has been invented, now its getting to the point where any real technology needs a ton of R&D just to move forward