51.ca provides a platform for people to speak freely. I don't think the lawyer representative can win if they decide to suit. Even 51.ca charges for advertising, the website is not liable for the product as it's the producer not the medium's responsibilities.
I don't have to mention that even ebay charges for selling on its website, they are not liable for those products.
Or TV and other mediums are not liable for cigarettes consumers' health claims.
The letters indicated the potential problems with the product.
I started to use the product last July until Jan. this year. I didn't work at all for my health situation. I got more problem since then. I didn't mean the problem was caused by the product, however, it didn't work as its ad described.