I added $9.52 to my challenge account today that I saved while getting groceries. That brings my total Challenge to $98.08.
I used coupons (which I normally don't use) and also signed up for a Top's Bonus Card which allowed me to save money on the tea that I like to buy.
I've also had 2 more of my ING invites used so $20 has been added to my ING account. I decided that I'll match the $25 I'll have made when all 5 are used and put that towards my challenge money also.