oh ok, I don't know about that system but FYI for anyone reading, on HomeExchange you can find other people who want a simultaneous exchange, or who will plan with you for a non-simultaneous kind, or you can skip the direct exchanging completely and earn credits for future stays somewhere else. in their system, a stay = a stay. there is no other factor like how long the stay was or how big/nice your place is. just, if you let somebody stay at your place, you get credit for 1 stay (they call this a balloon) and that is worth redeeming for one stay anywhere else. So can go anywhere, you don't need to find somebody in a town you want to visit who also wants to visit your town.
I'm presently in a few conversations about summer travel that will be direct exchanges with other people. But I'm also always willing to get out of my house for somebody else to have a short stay so I can earn credits that I'll use for longer stays or to extend future trips. (example - I want a 2 week summer trip to be based in two cities - 1week as a direct exchange and 1 week using up a credit)
Home Exchange seems to be maybe 1/2 primary homes and 1/2 second or vacation homes. People are usually very willing to accommodate a longer stay in their vacation home during whatever season they're not using it. I do notice many of the vacation homes are cross-listed on VRBO or ABNB. Those owners prefer the $ and will only exchange if they think it's unlikely to rent those days. That will be openly mentioned in the ad, so you can link to the calendar and reviews.