- I don't think we should change "Search needs your help!" to "You can help improve search relevance". I prefer the simpler, attention-grabbing headline.
- "none" and "irrelevant" are separate entries in the list, so I changed that. I think it's good to keep the background colors on the ratings (don't know what you intended since it's hard to show them on wiki, so I added some "annotations"). It's typographically a bit ugly, but it draws the eye to the most important part of the page.
- The snippet behavior has changed, so I've made a first pass at documenting it correctly.
- I tried to make things more consistent between second ("you") and third person ("participants"). I think descriptions make sense in the third person, but instructions should be in the second person. We already have imperative forms (like "click on X") with an implied second person subject. Or we could make everything third person ("participants"), but that's too bureaucratic sounding.
- I also tried to be more consistent with the capitalization of the ratings throughout. Should we italicize them throughout, like they are in the headers?
I made some other minor edits throughout. Feel free to revert any that offend—especially the em dashes. I love em dashes. The rest of the changes look great!
To coincide with this update, we should re-announce Discernatron and it's improved UI and smaller query sets to be judged so we can get more help.