It is sometimes nice to be able to launch a browser from within your applications. Though not as elegant as the use of a UIWebView, it is much easier.
NOTE Because it is possible for an application to bind itself to a URL (like Google Maps), this technique can also be used to launch other applications on the device.
Here is a simple example of how to open safari with a specific URL:
NSURL *url = [NSURL URLWithString:@"http://www.iphonedevelopertips.com"];
[[UIApplication sharedApplication] openURL:url];