Per How do comments work?

Comments containing certain keywords can be deleted with a single flag.

It is thought "thanks" is one of them.

Which for a second was alarming; a single flag can nuke a proper comment requesting clarification / suggesting improvements that ends with "thanks".

But by testing, it seems substantive comments are exempt. How is substantive defined? I googled using site:stackexchange.com but I can't find any info at all on the threshold.

1 Answer 1


"Thanks" is indeed one of Stack Exchange's seven dirty words. I did some testing a while ago and found out "thanks" comments longer than 40 characters won't be deleted with a single flag. Other dirty words may have other character limits, or no limit at all.

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