Social Media Metrics

Average View Duration (AVD)

Average time viewers spend on a video.

Why it matters

AVD is YouTube's most important retention signal.

5:00 AVD on a 10-min video.

Adding fluff to extend AVD — viewers leave faster.

Related terms

Click-Through Rate (CTR)

% of impressions that became clicks.

Hold Rate

% of viewers still watching at a given second.

Reach Rate

% of followers reached per post.

Open Rate

% of email subscribers who opened a send.