I adore NetGalley - I haven't read anything from then in ages but that's my fault, not theirs. OliveReader has a fantastic blog post about how to craft a good NetGalley Bio. I hadn't looked at my bio in ages when I came across this and I definitely went back and looked over what I have on there! Fortunately I seemed to pass muster.
Do you want to absolutely pull your hair out with frustration? Then read this absolutely awful article entitled "Save the Library - Fire the Librarians. Many thanks (I think?) to Librarianbyday for tweeting a link. Warning: the link is rage-inducing and awful.