Yes, you absolutely can!
But it won't be fixed if the spoiler is for something more than X months old, unless it's obvious trolling right (ie. spoiling in a 'should I buy this book?' thread)/.
"The problem is that the argument is that people like me have left the board because of these issues. By definition, the current board is only going to contain people who don't have a problem with the way things are at the moment. As for statistical evidence: I'm fairly sure this board is less busy now than it was five years ago."
As they'd say on Wikipedia - Citation Needed.
Okay then  http://www.trekbbs.com/forumdisplay.php?f=43