Some Etiquette in technology
Common rules for e-mail/messages such as avoiding flamewars and spam are constant across most mediums and communities. Another rule is to avoid typing in all caps or grossly enlarging script for emphasis, which is considered to be the equivalent of shouting or yelling. Other commonly shared points, such as remembering that one's posts are (or can easily be made) public, are generally intuitively understood by publishers of Web pages and posters to Usenet, although this rule is somewhat flexible depending on the environment. On more private protocols, however, such as e-mail and SMS, some users take the privacy of their posts for granted.
"When someone makes a mistake – whether it's a spelling error or a spelling flame, a stupid question or an unnecessarily long answer – be kind about it. If it's a minor error, you may not need to say anything. Even if you feel strongly about it, think twice before reacting. Having good manners yourself doesn't give you license to correct everyone else. If you do decide to inform someone of a mistake, point it out politely, and preferably by private message/email rather than in public. Give people the benefit of the doubt; assume they just don't know any better. And never be arrogant or self-righteous about it. Just as it's a law of nature that spelling flames always contain spelling errors, notes pointing out Netiquette violations are often examples of poor Netiquette.