It is good practice to question who you can trust to give accurate and truthful answers, but I contend that it is far better to put the same question to more than one person and/or to discuss any answer you get with your friends. After all, we have heard of and possibly know people who have been given bad advice by so called reputable experts such as doctors, finance, advisors and the like; and there is no reason to believe that even a professed bdsm expert wouldn't sometimes give advice that is inappropriate for you (especially without getting to know you thoroughly).