I really like this dominant color placeholder idea. I think I first noticed it in use on Designspiration, but it seems to be gaining popularity and will probably be standard operating procedure soon.<p>The difference between using a single color and a resized 3x3-pixel image is subtle. I'd like to see 5x5 and 7x7 examples as well, assuming the file size remains small enough. I wouldn't expect <i>too</i> great an increase in bits, but the amount of extra detail available might be worth it.