A billable user in Content Camel is an admin with full access or a regular user (salesperson, customer success rep, non-admin marketers). There's a lot of value to individual users (creating content collections, sharing personalized collections, follow-up notifications), so we include them as billable users. That's pretty standard. We do not charge for viewers. We pro-rate your account at the point that your invited admins and regular users become active. We define that as an accepted invite and past the onboarding.