start with what you want to measure - what exactly is the metric for success here? is it just signups?
might help us to know a bit about what the product is, but is there something specific that users should be doing in this free tier? what % of the 50 are taking this action?
might help us to know a bit about what the product is, but is there something specific that users should be doing in this free tier? what % of the 50 are taking this action?