It occurred to me that Thomas Runge wrote in gmane.os.netbsd.help:
> This side belongs to the developer of Linux' ov511-driver. He
> lists a *lot* of cams. I usually got to eBay and compare with
> this side to get the right cam. Unfortunately, these cheap
> cameras are not built for 24/7 work. My cameras die after some
> month, but they are cheap enough.

Not only that, their picture quality is abysmal.