Somewhere below the hero, most SaaS homepages have the same section: a screenshot of the product, slightly angled, maybe in a browser mockup with fake traffic numbers. Everyone scrolls past it, because everyone knows screenshots are where marketing happens.

Our homepage section is literally titled "Proof, not promises," so a screenshot felt like self-parody. Instead we embedded the product itself: a public guestbook called Owners Were Here, built with Fugte (my widget builder), embedded on the homepage with the exact iframe snippet any customer gets. Anyone can sign it. The notes pile up into a wall. It is a graffiti wall with a submit button.

This post is the why, and then the three sharp edges you hit the moment you let strangers write to your landing page.

Why a guestbook, of all things

Two reasons, one honest and one sneaky.