Ideally, this is in answer to a [=YKTTW=] post that actually asked "Administrivia/DoWeHaveThisOne". Otherwise, it's answering a question that hasn't been asked, which looks odd.
Using the message should be followed by a link to the trope page and an explanation of why they are the same to avoid misunderstanding, and to allow informed discussion if there is disagreement with the assessment. Do not post only the trope name, and especially not in bold, as either action can lead to unneeded confusion and conflict- only posting the trope name can be interpreted in a number of derogatory ways, and bolding is often considered equivalent to yelling in text on the internet.
Should a [=YKTTW=] come under scrutiny as being a preexisting trope, any citation of said trope should be made only with the consideration of whether examples existing within the [=YKTTW=] would actually be accepted within the boundaries of said trope. Neglecting this could result in the examples being removed by those who do not agree they meet the criteria.
Any further efforts should await response by the [=YKTTW=] creator or custodian.