how it works:
You list boxes of outgrown clothing to send to other people
You pick boxes from the list for your kids
You pay shipping PLUS an extra fee for the clothing sent to you.
To send clothing out, you just print a label.
everyone is happy, right?

except that you can't search by brand (I am a little picky about that) and with the cost of priority shipping, it may be MUCH more cost effective to stop at a few yard sales, and your local goodwill. Could be a great idea if you live in the middle of nowhere, though, and need kids clothing.