PS I have had a couple of occasions where the guest staying turned out not to be the person I was communicating with at all, but rather someone communicating on behalf of the guest from their account. In one case it was a husband pretending to be his wife (apparently he booked all her travel arrangements for her) and another time a son pretending to be his mother because she couldn't speak any English.
In both cases, I didn't find out until check in.
So, technically it's not against the rules but, apart from this just being WEIRD (why not just say in the messages who you really are and why you are writing on behalf of the guest?) it does create some issues.
Firstly, you have no sense of who this person is. Secondly, it means that the guest who is actually staying has not read ANYTHING.. One of the ladies admitted her husband had just shown her the photos of my listing and told her there were cats and she said, 'okay'. So, your guest may well arrive with unrealistic expectations or might repeatedly break your house rules (the latter happened in both cases).
The other lady needed her son to translate. He didn't stay overnight, but he was here constantly, cooking, eating, hanging out, going up and down to her room. In fact, I saw more of him than her. I'm not really okay with that. He hasn't paid to be there and it's not fair to my other guests either.
Not sure how I avoid this kind of thing in the future when there are no obvious red flags in the correspondence.