Provo Craft in honor of releasing their 100th cartridge is giving away 100 cartridges over the next 5 weeks.
Their 100th release was Winter Wonderland and you can see the cartridge here: http://www.cricut.com/shopping/ProductDetails.aspx?id=361&s=1&sc=2
It's a great themed cartridge and even has 3D houses! You can read about the promotion on the message board (including how to enter) here: http://www.cricut.com/messageboard/tm.aspx?m=5248058&mpage=1
