By our estimates, expect 25% of your visitors to lurk, 60–70% of your visitors to do things that are easy and central to the purpose of your product or service, and 5–15% of your users to engage and create content for you. Among those engaged users, expect 80% of your content to come from a small, hyperactive group of users, and expect 2.5% of users to interact casually with content and less than 1% to put some effort into interaction.
