I recently posted about a new site that, among other things, pings news.ycombinator.com with quite a few page requests once every two minutes. (original post at http://news.ycombinator.com/item?id=1941631).<p>Our servers are now being ignored by news.ycombinator.com, which we're not really complaining about, but what interval should we be using? I'm hoping there's an acceptable limit that's over 2 minutes but less than once day. Or maybe it's all about total traffic, in which case it would be nice to know a little more about the blacklisting rules so we can make sure we stay underneath it.