Are we going to limit the list of people who marked something helpful? I can see it getting excessively long. For an example, Twitter handles multiple retweets like this, which converts into just the number. They have the advantage of having user icons, which we lack ATM. I wonder if it might work best to show the list of names as a tooltip like this that appears when you hover over the numbered list. Steven Walling (WMF) 22:14, 7 December 2011 (UTC)
This post was posted by Krinkle, but signed as Steven (WMF).