Blogs and blogging are discussed. A blog is an informal website consisting of diary-style posts displayed in reverse chronological order. Originally the work of individuals, multi-author blogs from organizations are now common. The term "blog" was coined in 1999 as a short form of "weblog". Different types of blogs include personal, group, micro, corporate, and aggregated blogs. Earning money from blogging involves setting up a blog, driving traffic, converting visitors to subscribers, and selling products or services. Alternatively, blogs can earn money through Google AdSense by meeting requirements like having an account over 6 months old with at least 20 posts and 100 subscribers.