Google AdSense Team Answers Your Questions

The Google AdSense blog has posted another video entry answering some of the questions from publishers.

Geoffry Vitt of Google AdSense answers the following questions:

1. Why aren’t all of my ad units showing? I’ve pasted 3 ad units into my site, but only 1 appears.

2. The postal service in my town is unreliable. What other options do I have for receiving payments?

3. How do referrals work and why should I use them?