Update: So apparently this didn't go quite as planned, but on a good note those who didn't get a chance to try tonight (like myself) will have another opportunity soon. Here is what they said on their Facebook page:

Please accept our apologies for issues experienced with the Tide Challenge tonight. To make it fair to each of you we’re postponing the launch until we’re sure that ALL technical issues are fixed, and will be increasing the number of Tide Stain Release 10 count packs up for grabs to 150,000!! Stay tuned for a new date & time. Sorry for wasting your time – it’s truly unacceptable. Thanks for bearing with us!

I will let you know when there is a new date and time!

The first 100,000 people to register here at 9pm EST today will get a free sample of Tide Stain Release for yourself and three of your friends! Be ready to hurry, these will go quick!