I have never been subscribed with them but I got an offer to join in June by email through my subscription to Today's Parent magazine. I wrote about it here:
If you recall, they were telling me I had a special chance to skip the waiting list if I signed up before July 4th. And I think I called their bluff.
I got an email today directly from Loose Button telling me I have less than 24h to sign up. Obviously, there was no waiting list. I'm not a fan of manipulation and for that reason, I strongly stand by my decision to not sign up to their box. A company that manipulates potential customers into signing up for their service does not deserve those customers.