We're defining a north star metric for the open beta of our Chrome plugin-in that lets users annotate specific page elements. We need to optimize around retention and want our north star metric to reflect that. Our current idea is this: "Users who have created at least five annotations in their first week of using Juntoo." Do you have any feedback on this first metric? - Is this metric relevant or are we completely missing out on something? - What are your recommendations on the number 5 (which is based on pure intuition). Thank you!