Best current propulsion blog

This blog was set up in response to the decline of the AmericanAntigravity site, and before the Tau Zero Foundation had got underway. Now that Centauri Dreams has rebranded itself the news site for Tau Zero, I would refer all those interested to that site for the latest news and information, partly because they have more time to devote to it and with a view to reducing the huge number of sites dedicated to the subject, which only seems to increase confusion and the propagation of errors.