Despite its many useful features, Facebook includes a plethora of dangers, frustrations, and annoyances. A browser plug-in has been making Facebook less annoying for years, a new version works with Facebook's latest updates, and the developer is now designing an app that will bring some of the features to phones and tablets. In Short Circuits: Maybe you've seen suggestions for improving Windows networking speeds with a simple Registry tweak. The good news is that the tweak doesn't harm anything, but the bad news is that it also doesn't do much to improve things. • It may seem like email has been around forever, but it was invented just 50 years ago and it didn't become widely available until 30 years ago. In Spare Parts (only on the website): In an effort to become an important player in medical computing, Microsoft is acquiring Nuance. • A survey suggests that about half of US students are concerned about school safety and the ability of school administrators to deal with threats. • Twenty years ago: A small organization in Toronto launched Naked News. It's still around, but most of the news has been replaced by feature stories and there are no longer weather reports.