Not a revenue number, not a follower count. It's a much narrower signal than most founders expect, and most spend money long before they've actually seen it.

Shaun Gold
VC & Top 1% Ghostwriter
Founders ask me this constantly, usually hoping for a revenue threshold or a follower count they can hit and then "graduate" to ads. That's not the signal, and chasing it is how good organic momentum gets diluted by an acquisition channel that isn't ready yet.
The actual signal is this: can you point to the exact message, format, and audience segment that converted your last five organic customers, and would you bet money that the sixth would convert the same way? If you can name it specifically — not "our content resonates" but the literal sentence that did the work — you have something worth amplifying. If you can't, ads will just spend money finding out you don't yet.
“Ads don't create a message. They repeat one you already proved, louder. Skip the proving step and you're just paying to repeat a guess.”
Once that signal is real, paid acquisition stops being a gamble and starts being arithmetic — you know roughly what a customer costs to earn organically, so you know exactly how much you can afford to pay to buy the same outcome faster. That's the only version of "going paid" I've seen actually compound rather than just burn runway.