If your product is a web app then I'd say you need a .com as soon as you're out of beta; I'd class delicious an an anomaly. If it's a desktop or smartphone app,

If your product is a web app then I'd say you need a .com as soon as you're out of beta; I'd class delicious an an anomaly. If it's a desktop or smartphone app, you can wait a lot longer (like instagram).