Despite being a commercial concern, Netflix famously refuse to release viewership figures for their series on the grounds that their revenue is directed towards producing programmes of quality, rather than churning out quantities of dross. Perhaps UK media attention should be similarly focused less on the daily ratings war, but on Audience Appreciation Index scores, and how series contribute to a channel's brand identity. For instance, BBC Four's historical documentaries and musical programmes may never rate particularly highly, but mesh well in terms of the channel's "arts and culture" niche, whereas BBC Two seems to have become an ill-defined Corporation dumping-ground, and likewise Film4 has a clearly-defined purpose, whereas its parent channel's alternative edge seems to have been blunted since the turn of the millennium. Of course, commercial channels may have more need for ratings as a yardstick towards profitability, but even here, appreciation scores might be a significant help towards ensuring the demographic mix is well-balanced.