Forums at Splitcoaststampers
Here's the one I keep up each week with the photos of card and sketches. You can always find it at the very top of the Sketch Challenge forum as a sticky.
Check the first two post, the files have to be broken down due to file attachment size. The photos take up more space than sketches.
You can find Jodi's thread linked in the first thread of the above link. Not sure how you all missed this thread. Jodi's will take up less ink that the 'old sketches like new' and is much easier to open.