[eriknstr]

I've seen people add '/s' to their comment when what they wrote wasn't actually what I'd call sarcastic. Probably quite a few people have seen others use '/s' but they've inferred the wrong meaning of the label and then they use it incorrectly.

Seems from what was said above that this is something that has not been taken into account.

[tgjsrkghruksd]

If it's indistinguishable to fellow humans as sarcasm then it doesn't matter for the purpose of this corpus.

[eriknstr]

What I mean is, it looks like the researchers only looked at whether or not the "/s" was intentionally placed at the end of the comment, not whether the comment was actually sarcastic or whether the person that wrote it understood that "/s" is meant to convey sarcasm.