I heard many voices saying that in the times of community ratings expert assessments are not necessary any more. True, user ratings are important and we often rely on them when buying something or booking a hotel. But still, user rating is not everything. For some products up to a third of user ratings are fake, they are done by the seller or somebody he commissioned to do that. This is common practice. So Tripadvisor had to remove its claim: “reviews you can trust” from its UK web site. Though in many cases we can rely on user votes, assessments, reviews etc. they can hardly be used as hard facts, say in the B2B field. There you have to obey ISO norms and experts assessing on it. They in many respects can say more than a user rating. Take the example that you book a well rated journey and start enjoying. For some reason the travel agent goes bankrupt and you have to pay a second time to be able to continue your holidays (as it happened recently). No prior participant could have known this and usually nobody checks the sufficient insurance for the package. There are many things, that are not visible to the user or traveller at once.
Another example: You plan to start a longer journey by car. Ten of your friends ‚voted’ your car okay because it looks good and drives well, but the mechanic says no, there are severe problems with the brake. Would you rely on your friends start that journey without any worries?