As an addendum to the above, using emojis to mock, be ironic, sarcastic or negatively comment upon a seller's listing in the exchange can and will earn you warning points in the same fashion as posting off-topic comments.
If you do not like or approve of a seller's listing and have no intention of buying...do not interfere with it.
If there is an issue which needs addressing, use the report button to make staff aware of the matter.
