The document discusses four strategies for working with app reviews: 1) Reply to all reviews, which is best for new apps or those getting 10-20 reviews per week. 2) Reply only to popular and featured reviews, which works for apps getting over 50 reviews per week with under 10% negative reviews. 3) Reply only to negative reviews, for apps over 50 reviews per week with over 10-15% negative reviews. 4) Automate replies to reviews, which works for established companies using templates and assigning reviews. The document emphasizes not ignoring any reviews, letting users know when problems are fixed, and monitoring for spam.