netmeg - 2:36 pm on Mar 15, 2012 (gmt 0)
For ecommerce, if the product is really and truly never coming back, my first choice would be to 301 it to something similar or a replacement, but if there's no replacement, I guess it would depend on how much traffic that page gets. If it doesn't get much traffic on its own, I'd probably 410 it. If it *has* gotten a lot of traffic, then I might want to NOINDEX it, so that my visitors at least have a chance to see that I'm no longer carrying it (via bookmarks or my site search). I don't think I'd use a one-size-fits-all strategy here.