I'm a proponent of using spoiler warnings on newsgroups. But what consists of "current" depends upon the newsgroup. Also how much of a spoiler it is makes a difference: There are particular elements of the books that are more of spoilers than others. So I will still *spoiler* references to the end of _Orca_. But not to the end of the much more recent _Issola_. That ending isn't nearly as much of a spoiler to those who haven't read everything before. In a golf newsgroup, today's PGA results require a spoiler, yesterday's don't. In a movie newsgroup, if the movie has only been out for 2-3 months, I add a spoiler. In a SF newsgroup, I wait until the paperback is out for 2-3 months. In a list server designed around one subset of books by one author - I wait until the hardback has been out 2-3 months. But that's silly - why would someone subscribe to this list server if they were able to wait that long to read the book?