We love reading the reviews of the Eco-nomical Baby Guide on Goodreads, most of which positively glow. We were surprised to hear a particular complaint, though: Some readers didn’t like our stance on used car seats. They believe it is never okay to reuse a car seat and advocate buying a brand new one for each baby.

So what is our stance, you ask? We say reusing car seats is okay—as long as you accept one as a hand-me-down from a trusted source. That way you can be sure of the seat’s age (under five years) and know that it has never been in a car accident (in which case it must be replaced). Borrowing a year-old infant seat from your best friend? Perfect! Picking one up at a garage sale? Not recommended.

We were especially surprised by the response to this stance because, in our green worlds of Portland and Eugene, almost everyone we know passes car seats around. I’ve been the recipient of quite a few emails asking if anyone had a car seat available to lend.

What do you think? Would you—or did you—borrow a car seat from a trusted friend or family member for your child? Does reusing a car seat in any circumstance give you pause? Let us know!