When measuring customer acquisition cost (CAC), focus on active, monetized users rather than just sign-ups, as many may drop off shortly after registration. This ensures you're tracking the cost of retaining valuable users.

For paid growth, ensure you have revenue before investing in ads, and understand your customer acquisition cost (CAC) versus the lifetime value (LTV) of your users to ensure profitability.

Paid growth involves spending money to acquire users. It's important to ensure that the lifetime value of a customer exceeds the cost of acquiring them, or else the growth strategy may not be sustainable.

It's a common mistake to assume that paid acquisition costs will remain constant; in reality, it often becomes more expensive to find and convert users over time.

Sustainability in growth means not overspending beyond your means. If your customer acquisition costs exceed the lifetime value of your customers, you risk running into financial trouble.

To create a valuable business model, focus on reducing customer acquisition costs while enhancing customer lifetime value through retention and upselling strategies.

Relying solely on paid acquisition for growth is risky. If your growth depends only on ads, it may not be sustainable in the long run, especially as competition increases.

Acquiring better users is essential; targeting the right customer can significantly improve your cohort retention rates.

If you build a better product for users, you also end up with a better profit and loss statement and better economics; if users love the platform, your customer acquisition cost is lower and throughput is higher.