You usually see this tag on less expensive wines, because all it means is that the wine was bottled by Company X, which either had the wine made under contract by another winery or simply bought the wine en masse and then bottled it under its own name. You probably aren't given any information about who made the wine, but then again, at $5.99 a liter, you probably don't care. See also cellared by, estate-bottled, made and bottled by, produced and bottled by, and vinted by.