I think the current system of distributing Half Dome hiking permits is severely flawed. It's a perfect environment to encourage scalping since most ordinary people don't plan so far ahead to try to get ahold of a Half Dome permit the first day they become available on recreation.gov, and even those that do have trouble competing with scalpers and their more sophisticated methods of obtaining the permits via the web.
So here's a modest proposal for a more simpler, fairer, and effective method of passing out the permits for next year:
Distribute Half Dome permits on a first-come, first-serve method at one location, the Yosemite Valley Wilderness Center, starting at 12:00 noon one day before the day of the permit. The Half Dome permits will then be distributed until they all gone for the following day.
In other words, if you want to hike Half Dome on Saturday, you'll need to line-up at the Wilderness Center before 12:00 Noon on Friday. Want to hike it on Sunday, then get in line on Saturday.
This will eliminated all the scalping of the permits being done on Craig's List and EBay. It will also minimize the number of no-shows, and you won't need a computer to have a chance in obtaining them.
The only major downside to this method is that you won't be able to hike Half Dome if you are visiting the park just for a single day. But that's probably a good thing too, since it will force most Half-Dome hikers to get acclimated to the altitude for at least one extra day.