I followed his blog regularly until he left Reuters for Fusion, and given Fusion’s new focus on multimedia, he has not at this point set up a regular text-base home blog.
He is, however, still blogging, at Fusion, Slate, and other places.
I emailed him, and he suggested that I can follow him via his (generally pretty low volume) personal domain, FelixSalmon.com, which is is using as an index for his various activities.