There's a number of ways to share content from within iOS apps. iOS5 includes support for sharing content via email and Twitter. There are also libraries like ShareKit that allow you to share via any number of sharing services. So why use BCDShareSheet?
If your apps only need to share content via email, Twitter and Facebook and you don't want to write the same code each time, then the BCDShareSheet framework might be the development tool you need.
Otherwise, you might prefer to call the sharing services yourself or to use something like ShareKit that supports more services.
BCDShareSheet requires iOS4 or later and sharing via Twitter is only available on iOS5 (as it uses iOS's built-in support for Twitter).
· Apple Xcode