For those of us who can hardly handle the disappointment of having Facebook involved in only 93% of our lives: You can now shop for it! At Target! Facebook credit gift cards are hitting the aisle Sunday, in denominations of $15, $25, and $50 that can be spent on goods and services available on 150 free Facebook games. It's "the perfect gift for the person who has everything in the real world, but still needs things in the imaginary world," notes Eric Savitz at Barron's. Here's what other people are saying: