It's not as silly as you might think! I read an abstract by the National Institutes of Health about several clinical studies of Penile Traction Therapy and Vacuum Erectile Devices, which concluded that they do work, to some degree. There was measurable increase in penis length for men who wore PTT devices 8 hours every day for 6 months, although in most cases the gains were quite modest, like 1 to 3 cm, although men who suffered from small penis syndrome realized more dramatic gains. The improvement for Peyronie's disease sufferers looked really promising, with curvature improvements that ranged from 15 to 27% (the corrective surgeries available, as well as the new Xiaflex injection, offer only a little more improvement at 33%).
Supposedly, it is believed that the best results are achieved in the acute phase of Peyronie's, before the scar tissue is calcified, although some study participants had the disease for 11 months. VEDs were less effective in both areas, although they do make it feel good to have the ole' willie filled up and (in my case) almost hard. Most of the studies used stretched penis length (SPL) as the measurement of success, although one Peyronie's study used photographs taken after medically inducing an erection, to measure curvature success.
Having read that, I ordered the "Deluxe" PTT device from X4labs.com for $89.95 with free shipping. They have a special Peyronie's model for like $149.95, but I couldn't see much difference in that product to merit the much higher price, other than a free bottle of Vitamin E, which you can get from the drugstore for much less. I've been wearing the thing for about a week or so, and it takes some getting used to, but isn't really painful or anything like that. It has a tension adjustment that you can use to tighten or loosen up things once you put it on, but early on you have the urge to make it tighter in order to feel the stretch. By the end of the day, however, you REALLY begin to feel it painfully, so I've been starting out with an easier setting, lately. We'll see how he does. The Little Woman said she actually can see a difference in my flaccid length, which wouldn't be important to me except for the fact that if I eventually need penile implants, they make them so that your erect length is about the same as your SPL, so HEY! The longer the better! BTW, TLW and I made love on New Year's Eve, and it may be my imagination, but it seemed the curvature had already improved a little bit. Fingers crossed...!
UPDATE- 04/02/2015: After 3 months of using the PTT device, my wife and I have noticed a definite improvement in the curvature of my Little Man. Where previously it curved all the way back over to my abdomen, it now curves but points straight up, so something definitely seems to be happening. Sex is still rather awkward, but somewhat improved. Keeping my fingers crossed that there's more improvement to come!
UPDATE: 12/07/2015: After about 7 months of PTT, the bend in the lower part of my shaft has straightened out considerably, while the small bend up near the head is, unfortunately, not much affected. I was using VED's at the same time, so it's hard to tell whether they or the PTT worked better, although my gut instinct is that the PTT was most effective. As a result, the doc has taken a wait and see attitude toward getting penile implants. When I asked him about the ED1000 ultrasonic shockwave treatment which is not yet available in the US, he said it looks promising both for ED and Peyronie's, but all the studies aren't in, yet.
