The LinkedIn loop, and when to move from funnel to loop
Every invitation to a non-member is a referral the user does for you. That is a loop, not a campaign.
LinkedIn: input = new sign-up; actions = sync contacts, complete profile, suggested connections from past workplaces, groups, jobs; output = larger network, invitations to non-members, returning users creating new inputs. Loop effects: optimise across the user's lifetime (higher LTV), acquisition not tied to one awareness push (referral, organic word of mouth, 'continuous and self sustaining'), better engagement, higher monetisation (illustrative '300 or 400 dollars instead of 100' per user). Funnel strengths: defines lifecycle stages and what to optimise at each. Prioritise: funnel first while learning the product; build loops from the steps that extract the most value as learnings accumulate. Slip: she says 'Netflix' once when she means LinkedIn.
Settles the framework question most teams argue about.