By many measures, Mwmbl is doing great. We have indexed over half a billion pages, we have over 4,000 registered users, and over 30,000 curations from those users. Our volunteers are crawling around 5 million pages a day. But the score that I care about most right now is NDCG. This measures the quality of our search results against a “gold standard” which is just Bing search results for the same query.