There are many ways to build a strong audience but one of the best is having a strong technical skill. In this case, it is Wine and Vinticulture.
With so much information about wine swirling around the choppy seas of the Web, it’s good to get down to sites and blogs that consistently offer wisdom, usually with some wit. Among the choices that wine adviser Paul Gregutt recommends are: Winebusiness.com, 1winedude.com and Wawinereport.com.
They have a good discussion on the wherefore of Wine Blogging.