MP3 Skype Recorder is useful for a variety of reasons. It allows users to easily record and save audio calls made through Skype, which can be useful for a number of purposes, such as:

1. Business: Recording calls with clients or colleagues can be useful for keeping records of important discussions or negotiations.

2. Education: Recording language lessons or tutoring sessions can help students review the material later and improve their language skills.

3. Personal: Saving recordings of conversations with friends or family can be a way to preserve memories or important moments.

4. Podcasting: Some people use Skype to record interviews for their podcast, so recording skype call can be useful for them.

5. Quality control: Recording calls can be useful for quality control purposes, such as monitoring and evaluating customer service interactions.

Overall, MP3 Skype Recorder is a useful tool that can help users record, save, and organize important audio conversations made through Skype.