How do you prepare your community for sudden spikes in attention (viral posts, external links)?

Sudden attention spikes — triggered by a viral post, a major external media link, an appearance on a popular podcast, or an organized social media mention — can double or triple a community's traffic within hours, bringing a flood of new, unfamiliar users who do not know the community's culture, rules, or standards. Without preparation, this can permanently alter a community's character by diluting the norms that existing members value. With preparation, spikes can become growth opportunities that bring in quality new members while preserving what made the community worth joining. The first line of preparation is having clear, accessible onboarding materials in place before a spike happens. A well-maintained wiki with an introduction to the community's purpose and rules, a pinned welcome post that is updated regularly, and a clearly written sidebar give new arrivals immediate orientation without requiring moderator attention for each individual. Communities that invest in these materials during normal periods are much better positioned for sudden attention than those that scramble to create them reactively. AutoModerator rules that enforce account age and karma minimums provide a structural filter that limits the ability of brand-new accounts — often created during spikes by trolls, spammers, or curious outsiders — to immediately post or comment. Temporarily tightening these thresholds during a known spike period, and communicating this adjustment to the community, is a standard management technique. When a spike is identified — through the subreddit's traffic data, through a sudden increase in the modqueue volume, or through a direct notification from a community member who spotted the external link — the mod team should move quickly to sticky an informational post that acknowledges the influx, explains the community's purpose to newcomers, and links to the rules. This gives the arriving audience a context frame before they start posting, which reduces the volume of off-topic or rule-breaking content that mods then need to manage. After the spike, a community retrospective that documents what worked and what to do differently next time builds institutional knowledge that makes future spikes progressively easier to manage.