1. Many HNers are not native English speakers. 2. Homophone typos are very common even among those who know the difference between the words. In addition, many

1. Many HNers are not native English speakers. 2. Homophone typos are very common even among those who know the difference between the words. In addition, many people have learning disabilities related to processing the written/spoken word. (My wife, for example, is accustomed to reading and writing on a graduate level, but has a very difficult time with spelling common words) 3. Some people don't feel that it is worth the effort to spell correctly.