I just got an email that said, "The following comment from XXX was posted on your WikiTree profile." It's true that the italicized portion was a hotlink telling me that the profile in question was a project profile, WikiTree-xx. But without thinking, I was starting to answer it as if it had been posted on my personal profile, Day-1904, until something made me suspicious.
As projects manage more profiles, this kind of message will become more common.
I think it would be a great help if the automatic messaging system could be amended to sen d the message, "The following comment from XXX was posted on your WikiTree profile, WikiTree ID-xxx, My name or Project Name." I don't think this would require much tinkering with the system, and it would be a big help to recipients to know instantly whether the message came to them as an individual or as a project member.