I have absolutely no time to do any revising, so my hubs just sit there, in repose. But my hubs are not factual, and most are fanciful and silly, so there's nothing to revise in them at any rate. I wouldn't want to change anything about them, because I personally like them as they are. Since I'm not on HubPages to make money, or to do anything other than practise my writing, it makes no difference to me whether they're visible in a search or not - I doubt anyone would search for the things I write about!
In short, I make no revisions at all, and probably never will. I will make my living elsewhere, and HubPages will continue to be what it always has been for me, a great big creative writing club.