Now that your little one has arrived, you'll want to tell the world. And these days there's more than one way to do it. For instant gratification, many new parents reach for their phone in the hospital and spread the word via text and email. They update their status on social networks, write a new blog entry, or send a tweet.
Consider also creating an online birth announcement on BabyCenter. You can choose a cute design, add pictures and a personalized message, and share it with the world (or just your family and friends) for free.
Or go old school. Handing out chocolate cigars and mailing paper announcements will probably never go out of fashion.