As I wander through windows-8 and related on SO, I am seeing things tagged ctp. A quick look through the questions tagged with that reveals the dogs breakfast you would expect: the newest 20 or so are related to the C#/VB Async CTP, some are the Windows 8 developer preview (of Windows itself and/or Visual Studio), and then it switches to a PHP CTP, and so on. There also seems to be a file type in there, but it's drowned out by people sticking ctp on much as they used to stick year and version numbers on.
Should we just hand-edit the tag off silently? Add a comment saying not to tag like that? Burninate the tag, which if I understand correctly means not editing and bumping, because the burnination will remove them for us?