Sign-ups per day, by first-touch channel
Channels
Campaigns (utm_campaign)
Top public videos (repost candidates)
Sources: users.createdAt, users/{uid}/events/attribution (first touch), users/{uid}/avatarGenerations (activation = first generation within 7 days, rate over sign-ups at least 7 days old), musicVideos + halloweenVideos views. Excludes admins, system/cmoOps.internalUids and guest accounts. "untracked" = signed up before attribution shipped. Spend, subscribers and forecast arrive in later versions.