We’re still using the term ‘whale’, despite Nicholas Lovell’s attempts to replace it with ‘True Fan’. Perhaps US mobile monetisation outfit SessionM will succeed with its ‘Power User’. Significantly, it’s putting numbers behind the concept too: it defines a ‘power user’ as the third of users who complete the most in-app activities across the apps it tracks through its network. Each quarter it consider the behaviour of this valuable cohort in its Power User Report. It’s just released the report for Q4 2012.