iPhone owners may have noticed something peculiar after they updated their iPhone software, which could be a good side-effect brought about by iPhone firmware update 1.1.1: a bug lets the iPhone stream music wirelessly to Bluetooth headsets, after accessing Visual Voicemail.

Now the question is: is this a good thing, or a bad thing? If it's good, can we call this a "feature" instead of a "bug"?

The bug is activated whenever someone enters the Visual Voicemail application, and then touch the Audio button at the upper right-hand corner of the iPhone's screen. An option to "Change Audio Source" pops up, and there are the three choices, one of which is "iPhone Bluetooth Headset".

For some reason, the Bluetooth Headset connection will not be disconnected even after the user exits the Visual Voicemail interface, and streams every sound to the Bluetooth Headset, including clicks as well as MP3 tracks played on the iPhone.

All in all, it's a pretty nifty option for those who prefer to use their wireless headsets...that is, if Apple decides not to fix the accidental feature.