while newspapers can very greatly in the kind of letters they print, letter columns carry a wide range of topics, especially about recent news and controversies.
The topics fall into two broad categories
current affairs in local, national or international life. Topics can range from comments on local by- lows and opinions about controversies to larger questions of philosophy and ideology
Personal experiences. The experiences can be humorous or instructive. They might relate to a larger issue (e.g. unemployment). This category includes letters appealing for money, help, volunteers or information.
in many papers, particular pages (e.g. sports; film and theatre; home and cookery) carry their own letters column. This frees the 'Letters to the Editor' column for more general topics.