Oh lord yes. Writers are often neurotic messes and we need validation! Or, you know, mockery. When I screw up, I like knowing it, so I can fix it next time. On the one hand, we can know what people want more of or liked by looking at sales figures, but on the other hand, getting specifics from reviews can be huge.
To go political for just a moment, if a survey question asked, "Is President Obama doing a good job", and there were lots of 'No' votes, that tells you something. If you then get additional reponses that say, "He's horrible and needs to sign more Republican laws into effect!", it gives you a different tale than "He needs to fight against the Republicans more! I say he sucks because he rolls over!" Two different stories that both generate "He's not doing a good job" scores, but for *radically* different reasons.
(For those who now want to launch into a political thing, please don't! We try to keep that out of the forums! This was a one-off example that was being used as an example only. Much obliged!)
So, when you say if you did, or did not, like a product, giving reasons why is very, very vital. Maybe the rules weren't followed and that bugs you. Maybe soem canon was violated (The capital of the UCAS is Toronto? Lofwyr is actually a Century Ferret in disguise? WHAT?!), maybe there was too much humor, maybe there wasn't *enough* humor, maybe some bit of data got reposted on five straight pages and you're wondering who did the layout, or maybe, just MAYBE, you got a book that gave you a bunch of cool run ideas, enriched teh world, gave you well-balanced new toys, and you can't wait to tell your friends so they can buy one too ... trust me, that kind of thing brightens someone's day.
So, write reviews, tell us what you think, and know that, hey, we're fans *too*. We want to do cool stuff! Help us out, and we can make the world even more awesome than it already is.
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Wow, we're way off topic. Hey look! Land of Promise! Elves! Gotta love 'em, right?