slivercastingEtymologyBlend of sliver + broadcasting.nounThe delivery of video programming targeted at specialized niche audiences.“That’s bad news for those who have high hopes for “narrowcasting,” material aimed at small audiences interested in specific programs and, therefore, prime audiences for specific products — fitness, business, cooking, you name it. As 50- and 100-channel systems come into being, narrowcasting could become slivercasting. A shrinking audience will limit advertiser interest.”