is it bad to not get any response after sending ranking #1 email ?
Who knows? More to the point, does it matter? I don't mean to sound crass. I guess this just makes me reflect on the abundance of these questions in general. (Hey, I may be as guilty as the next person, and this is not meant to be a criticism directed at MDpride). We all overanalyze every single move, to no end. In this case, if it's bad, what are you going to do about it? Nothing. Does it change anything? No. You will keep your rank list the same. Maybe one could argue that knowing whether it's bad or not will provide peace of mind, but I doubt it. It seems we are all destined to be anxious and fretful during this process. In all likelihood, the masses of SDN will disagree on any particular issue, providing no peace of mind at all. Even if they all agree that it is not bad, you will probably continue to have doubt. So this brings me back to my original question: does it matter?
Ok, off my soap box. Seriously, not meant to be a criticism of MDpride or anyone else. Just a reflection on the absurdity of this process and the effects it has on presumably otherwise sane people, myself included (and yes, I DO maintain that I am sane at baseline!

).
And now to actually answer MDpride's question, IMO it doesn't mean anything. Different programs have different philosophies on post-interview communications, so you really can't read into a lack of response at all. Rank as you desire, cross your fingers, and good luck!