> This is why we ask all users where they heard about PostHog whenever they sign up or book a demo – it's a simple (optional) free text field. Enough of our users say 'ad on Google' or similar that we know paid ads do actually reach a large chunk of them.

You have to be careful with how you word questions.

If you ask how I first noticed that something exists, then yes, an ad may well be it because ads are so in your face and hard to avoid. But it almost never is what convinces me to try the thing. In some cases ads actually dissuade me from trying the thing.

For instance, I'm extremely allergic to the word "proprietary". If that's your selling point, then you automatically fall way down in my list. I like my software boring and useful for my ends, not to be locked into somebody else's system.

Pretty much always what does it for me in the end is positive discussion in technical spaces.