Very simple & fun (imo) game! I'll post a picture. The next person posts their own picture, but there must be at least one item in common w/ my picture (both have toys in the background, both kids are wearing pink, both are girls, etc.) The third poster posts their own picture, but w/ something in common w/ the picture before theirs. And so on and so on.
Be sure to point out the common item! Also, pictures don't necessarily have to be recent, don't have to be the best picture and can include more than just your July '10 LO. Have fun! Here's the starting pic: