“We like what you’re doing, come back and see us when you have traction.” Every startup founder in search of seed, late seed or Series A funding has been on the receiving end of this statement from a venture investor. In fact, most have likely heard it more than once. It’s easy feedback for the potential investor to give because (they hope) it preserves the option to invest in future rounds. Yet it’s frustrating for founders who are left wondering what traction really means. The answers are typically vague. Sometimes an investor will suggest a few common benchmarks:  $100K MRR…