Definitions of microbrewery on the Web:
A beer maker with limited capacity whose products are typically distributed within a restricted geographic region.
www.hometravelagency.com/dictionary/ltrm.html
By definition, a microbrewery was originally considered to be a brewery with a capacity of less than 3000 barrels (2500 hectoliters), but by the end of the 1980s this threshold increased to 15,000 barrels (12,500 hectoliters) as the demand for microbrewed beer doubled and then tripled.
www.vendomecopper.com/obgloss.htm
Breweries and brewpubs producing less than 1,500 barrels per year.
www.homebrewadventures.com/resource_center/glossary/glossary.html
a small brewery; consumption of the product is mainly elsewhere
www.cogsci.princeton.edu/cgi-bin/webwn
Goddamn n00bs... try a fricken search...