Empty wall. Paste any live YouTube URL (or tap a quick pick), then Start. Clean chat on the left; spam streaks (≥3 identical consecutive messages) move to Removed.
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Spam messages appear here. Authors are not hidden globally — only messages in a spam streak.
Authors with 4+ clean messages (sent or to them) show up here A-Z. Type or tap a name to open their group. Spam stays out.