[blitzar]

You forgot the targetted ads, with the subscription tier to reduce it from 100 ads per page to just 10.

[_heimdall]

You also want to make sure you know exactly what your users are doing so you can offer the best experience.

Include a key logger and a daemon to grab full screenshots every few seconds.

[blitzar]

Bring back some old school methods with a modern twist too - upload all your contacts.

Instead of just emailing everyone inviting them to join and telling them which kind friend reccomended they join - use the birthday and home address information and send them real tangible marketing material for their birthday (+ on Anniversaries, Christmas, Easter and on any day ending with a "y").

[ashmelo]

That's may need over million TB to collect all data, actually is there anyway to host they data without doing cloud or Hardiver things in the world?