"Was this review helpful to you?" It's a nice discussion of the design and evolution of the helpfulness question, which I find very useful. At a deeper level i

"Was this review helpful to you?" It's a nice discussion of the design and evolution of the helpfulness question, which I find very useful. At a deeper level it shows how a seemingly small improvement in user engagement can have dramatic impact on a site. Read it. It should trigger a re-examination of your own site. HN thought: would the helpfulness question be better for articles than the simple upvote? Seems to me that it would?