I think for Indie authors every review is good, of course a 3 star review will hurt them a bit because people are thinking "meh, could be better but could be worse" and 2 and 1 star reviews will hurt them even more, but if the criticism in them is well put they will accept and appreciate the feedback, even more if they're just starting out.
For example some 1 or 2 star reviews are just because the book isn't similar to their tastes so I don't even mind those. If they complain about a lot of typos and error I don't get turned off, because I'm not reading to improve my intellect (if I wanted to do that I would read non-fiction) even tho that always happens a bit. But the main reason I read is so I get drawn to a different world, and so I can enjoy the story someone crafted.
One example is "Turing Evolved" the sci-fi novel that I finished reading a few days ago. The story is really well done, is clever, has some cool features about it and really drawn me to it. Yeah there was a lot of typos, errors and such but the author is making a revision (typos can be corrected over time, a bad story no).
I'll always try to review the things a read, at least since I have the Kindle. Because even if they're free stuff people waste some time they could be reading something they would like or may find something they like because of reviews. I'm just not sure to go for a book if it doesn't have any reviews at all, only if it has a really good description.
Well just my opinion in yet another huge post, sorry
