This is very very very unusual.
The question is surely interesting: what if government put a floor to the sell of houses?
However, it has 22 upvotes, and it is already, after just four days, among the most upvoted questions. In contrast, almost any other very popular question is at least 8 months to 2 years old.
Additionally, the question has 12k views, giving the asker a gold badge for a popular question. However, only the most popular question (about robots) has higher number of views! And that question is 17 months old. It seems impossible for a normal question to achieve 12k views in just 4 days!
Now, regarding the answers, most of them are given by "outsiders", by which I mean new users (to economics or SE), or highly inactive users.
One answer has 25 upvotes, accounting for all the user's reputation (discounting the 100 bonus for being a trusted user). Can you tell me who, in a very precise, even fortunate timing, joins a network and provides an answer with 25 upvotes? Seriously?
But worst of all, there is another answer with 65 upvotes! 65!! have you seen any answer in Econ.SE with that level of upvotes? And don't forget. All this happened in just 4 days! This answer was given just 30 minutes after the original question. Amazing timing too. Oh, and by the way, this answer is pretty mediocre. By no means it deserves 65 upvotes!
Notice also that answers (and the question itself) have a lot of comments. These comments are given mostly by new Econ users, all of them with 101 reputation, as many are already members of SE. They are probably those who provided the upvotes (as you need some reputation to do so). A lot of comments have many upvotes too. Some even ridiculous (32!). Can you explain how, one single question, suddenly and in a apparently coordinated fashion attracts so many new users, so much very interested in the topic? This is utterly insane.
All these seems to me a clear indication of fraud. Since some users are old SE users, this seems to be an elaborate type of fraud, and not a naive one. This is an attack to our network. I am thus calling to you to pay attention to this, and to escalate this up to those in SE who should investigate this.