This document discusses web mining applications and trends in data mining. It defines web mining as using data mining techniques to automatically discover and extract information from web documents and services. The main applications of web mining are improving web search engines, predicting user behavior, and optimizing websites. Web mining can be divided into web content mining, web structure mining, and web usage mining. The document also outlines trends in data mining such as exploring new applications, developing scalable and interactive methods, and mining complex data types like biological data.