The (potentially) World's Largest Sock was at Only Ewe and Cotton Too this afternoon and a bunch of people worked on it. About two feet of the 12+ feet needed to get to the start of the heel turn have been completed so far. It's top-down. As one of the knitters said, can you imagine the logistics involved in doing all of those short rows for a toe up?
I have no idea how many stitches are on the needles. The stitches are on a bunch of circular needles. When you knit, you have one end of a needle from the person on either side of you. It's a challenge, since everyone knits at a different speed, everyone has a different experience level, and there are "picker" and "thrower" style knitters next to each other. That's all part of the fun. I was sitting next to a man who wanted to be part of the project, so someone was teaching him how to knit--on the sock!
The Sock will be at The Whole Nine Yarns in Woodstock on Tuesday night. It'll be at some other places in the Atlanta area, but I didn't catch them all. Needle Nook was mentioned, as was a shop in Buckhead whose name I can't recall. The Atlanta Knitter's Guild is behind the Sock's appearance in the area. Contacting them might let you know if it will appear near you.
It will be at an event in Rochester, New York after Atlanta.