Facebook, Twitter and Google Maps all have APIs that allow other websites or computer programs to use their underlying tools.
The New York Times and NPR have also released APIs that allow other programs to draw on archives of movie reviews, restaurant reviews and articles.
If you’re particularly challenged, this thing called an i Phone is even defined for you.
Get started now — the list will grow more quickly than your relatives join Facebook.
Many mobile phones allow apps to be downloaded, leading to a burgeoning economy for modestly priced software.