There are many, many signals in the Database of Intentions, as my readers have pointed out, but the one I feel compelled to add to the chart I created Friday is the Commerce signal. This signal emerged before search, really, and has remained a constant, though honestly it has yet to become a signal that others can truly leverage into an open ecosystem (unlike the signal of search, or status update, or the social graph). I expect that to change, and shortly. So here you go, an updated version of the chart, for the record. I expect this chart may well evolve into a pretty complicated ecosystem in its own right, over time….