You focus on a good point here. For well understanding, i want to add some notes:
✓ Users are not basicly posting their attitudes based on objectif analysis, some of them are just posting to reach the weekly posting quota exiged by sig campaigns they joined or to reach a certain number of activity in order to rank-up .
✓ Newbies suggestions are not to be fully trusted even based on good analysis so it's always recommended to make your own researches before to take it into consideration .
✓ High ranked users are not genuine by default and their opinions are not always based on the good reason or the good willingness. Always look for more critics even their post-opinon gets merit rewards .
✓ Use your brain with the sense of critic before to follow any suggestion or advice .
✓ Merits is a nice helpful sign of good posts but don't forget that in some rare cases merits are given by the poster's alts or given based on the presentation when it's well designed.
✓ Do not ever hesitate or get shy to ask whatever interrogation across your mind. There is a dedicated board for biggener's questions {this one} .

Last thing, predictions about prices and market volatility are not to be considered as valid evaluation even based on common sense. Somehow like predictions in Gambling .