I would be wary of that, given people's incredible facility with fitting a conclusion on top of collections of inconclusive data and then, worse, fitting new data into that conclusion. I have probably done it myself.

Two thumbs up for metrics and startups and startups for metrics, but I hear "delta Twitter followers" and start seeing subtle distinctions teased out holistic evaluation of the arrangement of chicken entrails.

(The difference between Twitter followers and chicken entrails? Chicken entrails have measurable value - people can at least eat them.)