Something went nutty a while ago and I got something like 50 emails containing down / up notifications back-to-back. Perhaps some filter with configurable parameters and sensible defaults to protect you. Sending hundreds of tweets / SMS / emails could flatten someone's battery or fill up an email mailbox. It certainly polluted the clueless log in this case, pushing useful info off the bottom of the display. I appreciate that it could be very difficult to get the parameters right, but a very non-intrusive filter that just protects against truly extreme abuse by a crazy device would be worthwhile.