Usability 
There are a number of Wine sites on the mobile web offering reviews and ratings of various wines and vintages. WineZap is a little different. It starts with the premise that you now what wine you want but don't know where to find it. WineZap's free form search lets you enter any or all of a number of different search criteria including the name of a vintner, varietal, region, vintage and US zip code. Results will list prices, wine merchant's name, city, state and phone number. The phone numbers are not click to call though, which is inexcusable for a mobile site.