If the performance weakness continues for a week or two, the agency would start recommending decreasing spend with Reddit or directing it to other platforms.

After the blackout, we will be closely monitoring user behavior on Reddit and guide clients when we can unpause,” said Freddy Dabaghi, managing director at Stagwell-backed Crispin Porter Bogusky, which has asked clients to stop campaigns, depending on their client goals.

Reddit is redirecting some impressions away from existing communities, and some advertisers are pausing campaigns.