This is long overdue in my estimation, a search engine specifically targeted to wine-related sites.
Here is an article about it, and an excerpt:
Wine types have long bemoaned the fact that search engines don’t share our view of the world. If we type in “Barbera,” we don’t want to know about “Hanna.” So there’s plenty to like about Able Grape (www.ablegrape.com). Rather than the usual scattershot approach, it scours wine-specific Web sites and lets users divide their results by such categories as “official body” and “press,” providing a shorter path to the most useful info. Difficult-to-parse sites like that of INAO, France’s regulatory agency for appellations, are readily accessible.