I noticed this about Quora too. I land at Quora through google only by chance. As soon as I see that signin box, I leave. It's unfortunate because it would be a

I noticed this about Quora too. I land at Quora through google only by chance. As soon as I see that signin box, I leave. It's unfortunate because it would be a great site if it didn't try to be so much like facebook of questions. The downvote observation is a very good one. Downvoting is destructive in general and unpleasant for the content writer.