As long as they are not passed off as fact and the author states it as such. Specifically, saying “In my opinion...” I’m grateful for the personal experiences of enthusiasts on this forum. I have flirted with purchasing a Calendrier for years and haven’t done so. I heard rumors about the unreliability, but wanted confirmation. I finally received it from one of the members of PuristS and they are likely viewing this Journe forum. Their personal experience caused me to hold off on the purchase. I have a CB and it has worked well, but I’m hesitant to pull the trigger on a more complicated Journe. Just my two cents!