Twitter4R v0.2.0 now provides 100% Twitter REST API coverage for Ruby. This is the open source project providing Ruby bindings for the Twitter REST API. Most appropriate for pure Ruby and Ruby on Rails projects.
Gas costs sure have risen lately, at least in the US. With many drivers are seeing prices well over $4 per gallon of gasoline, the time has come to do something about it. The FuelFrog website, as well as its iOS app or Twitter, can help with this. It helps you keep track of how far you've gone, and how much gas you've used, as well as trends for gas prices in your area. Of course, there's also the FuelFrog API which, despite some security concerns, lets you integrate that data into just about anything.
Are you a developer who wants to get your news immediately? The New York Times NewsWire API, which provides links and metadata for Times articles the moment they are published, might solve your problem. But what if your news alert mashup doesn't quite get every bit of your undivided attention? Jer Thorp's NewsAlarm (our Mashup of the Day), combines the NewsWire API and an 85 decibel smoke detector into what might be the loudest mashup on the planet.