A reader writes:
Your reader’s observation about shrinking grocery sizes is spot-on. In fact, there’s a whole meme over at Consumerist that identifies products that have been zapped with the incredible shrinking laser. They’ve a whole wealth of items that have succumbed in recent years.
Go here to track the reader-generated "grocery shrink ray" series. Diaper details here. Another example:
Details here (the small print shows a drop from 9 ounces to 8.5). Another:
According to this post, "Both cans contain 100 tabs but the total weight has dropped from 72 ounces to 70.9 ounces." Head to Consumerist for dozens more examples.