How many downloads to expect from a TechCrunch article?

We are about to get some press (yay!). I am trying to guess what to expect and if possible, gage how many Heroku Web Dynos I should add.<p>At this point things are in good shape, server average response about 200ms and highest during most days is around 400ms. There was one instance where an AppStore upgrade caused things to slowdown. I have adjusted things accordingly and since then upgrades have not been issue.<p>So the question is how many hits/downloads should one expect from a something like a TechCrunch article or similar size press event?<p>Please share your experiences and/or recommendations.