If you've got a flatulent flatmate or friend with bad breath, you can gently (and anonymously) call their attention to the situation with the help of the domestic diplomat known as Ms. Nudge. The New Jersey-based site keeps several dozen carefully worded notes on file for almost any acquaintance, ranging from a boss who micromanages to a friend who drinks too much. Featuring lower prices (around $5 per missive) than other sites of this sort (e.g., Gentlehints.com and NoOffense.com), iNudge even shows you a sample letter before you order up your own -- so you can be sure you're not being too cruel to be kind.