I'm not sure, but to me it looks more a bad coincidence that some astroturfing attempt.
hoag: is the original poster with an old account. In some other sites it's common that the OP makes a vacuous comment about how great the story is. Here is less common luckily, but I've seen a few recently.
zanewill9: is a new account. The comment is too exalting and it raises a red flag for me. But if you read the history of the comments of that account, they cover many independent stories and are relevant to each story. So I guess it legit. (Or an extremely good suckpupet.)
hoag: is the original poster with an old account. In some other sites it's common that the OP makes a vacuous comment about how great the story is. Here is less common luckily, but I've seen a few recently.
zanewill9: is a new account. The comment is too exalting and it raises a red flag for me. But if you read the history of the comments of that account, they cover many independent stories and are relevant to each story. So I guess it legit. (Or an extremely good suckpupet.)