The Scottish Newspaper Publishers Association (SNPA) is the trade association representing publishers of 100 weekly and bi-weekly newspapers and a further 30 free distribution newspapers. It provides a range of services including the promotion of "The Scottish Weekly Press". Independent market research, commissioned by SNPA, has demonstrated that to reach the two-thirds of Scotland’s population who live outwith the four major cities, paid weeklies offer the highest coverage of any local media, and are by far the most useful and trusted vehicle available to advertisers. Nowhere in the British Isles are paid weeklies stronger than they are in Scotland.