I've always found that article very interesting. For those of you reading the references, you should NOT try to induce priapism! I've read some dangerous things on different forums from men attempting to induce priapism to force growth, so this has to be mentioned! Extreme cases of priapism can lead to PERMANENT ED.
Here's a video of a case of neglected priapism that resulted in megalophallus (21 cm. girth), and the resulting surgery needed- WARNING- EXTREMELY GRAPHIC:
http://www.issir.com/vmp/2004bue/day01/video/seyam.wmv