Why Watch-Time and Save-Rate Replaced Likes

The four signals worth tracking

Retention or average watch time on video. The first two seconds decide most of it, and the caption or on-screen hook is part of that decision.

Save rate, saves divided by reach. Driven by reference value: lists, scripts, numbers, steps.

Sends per reach. Driven by relatability and by usefulness to a specific named person. 'Send this to the friend who always books late' is a mechanism, not a gimmick.

Comment depth, meaning replies per commenter rather than raw comment count. Driven by questions that require experience to answer.

What each metric asks of the caption

For retention, front-load. Put the payoff promise before any context and cut the warm-up sentence.

For saves, make the post referenceable. Finite lists, exact numbers, copyable scripts.

For sends, name the person. Captions that describe a recognisable type of friend or colleague travel through DMs.

For comment depth, ask one question rather than three, and make it answerable from experience.

A simple weekly review

Pick your last 12 posts. For each, note reach, saves and sends. Sort by save rate rather than by likes and read the top three captions next to the bottom three. The difference is almost always specificity, not polish.

Change one variable per week. Testing hook style and length and format at once produces a result you cannot attribute to anything.

FAQs