It seems like one of the biggest issues will be making sure donors know what other donors are doing during this time period, to prevent overfilling of matching funds, to make sure the right number of people try to spike the donation box at 5, and to coordinate Tyler's "split up donations" idea during non-peak hours. Maybe there could be a single comment here that is being edited through the day so donors know what the best thing to do at that time is? (preliminary idea)
As you may know, on May 6, there will be a large one-day price-matching fundraiser for Bay Area Charities.
The relevant details are right here at MIRI's official website.
And this is the webpage to visit to donate.
For those of you who didn't read the two links above, here's the important information.