Rerun Y2K #18 answer

FORUM

Why FORUM is a Y2K word

phpBB boards with ten-thousand-post threads — where fandoms lived before social feeds flattened everything.

About Rerun

Rerun is a free daily word game set in the culture of another time. Season 01 is Y2K: guess one late-’90s or 2000s word in six tries, with a category as your clue. A new puzzle unlocks every day at midnight Pacific.