Unfortunately, or maybe fortunately depending on who you are, the sparkfun freedays favour people with an understanding of how websites/http works.
Most of the people trying to use the site keep pressing the refresh button not knowing that it's the exact thing you shouldn't be doing if you want free stuff. The refresh button doesn't get you anywhere because refresh loads the page you're on, not the page you are trying to get to.
With the website being hammered that much you're never going to get through all the pages you need to without lots of timeouts at every step.
ie, If you happen to get a page to load 1 out of 30 attempts lets say, and then click a button on that page you have another 1 in 30 chance of loading that page without a timeout and so on. So you need to keep retrying the page you're trying to get too instead of clicking refresh to reload the page you've already been on.
There are a few ways to do this, you can copy the URL of the button your trying to click on and keep pasting that into the browser until it loads. Then find the url of the next button etc.. However this method doesn't always work depending how the website is setup.
Another way, which I used on freeday last year, is to take the browser into offline mode when you get the page to load and copy/paste the page url into a new tab then click enter. Because the browser is offline it will use its cache and load a complete 2nd copy of the page instantly. You can repeat this to get lots of copies of the webpage, (say 10). Then go back online and try the buttons, you have 9 attempts before you need to go offline again and make more copies using the 10th .
Once you do get the button to work and the page loads go offline again and make some more copies of this new page and the process continues.
If you're now swearing at me for not saying this *before* freeday... I did say it before, I said it in the freeday thread that was created when freeday 2011 was announced a few months back.
I didn't try to get anything in this years freeday. I got some good stuff last year and I didn't want to be greedy.