Wikipedia’s policy on spoilers:
Articles on the Internet sometimes feature a “spoiler warning” to alert readers to spoilers in the text, which they may then choose to avoid reading. Wikipedia has previously included such warnings in some articles on works of fiction. Since it is generally expected that the subjects of our articles will be covered in detail, such warnings are considered unnecessary. Therefore, Wikipedia no longer carries spoiler warnings, except for the content disclaimer and section headings (such as “Plot” or “Ending”) which imply the presence of spoilers.
It makes complete sense, but this policy change is something I would have liked to know BEFORE I read the plot summary of The Road, a novel I WAS looking forward to reading.