After reading the letter writer's comments here, I have to ask...

Is this really such a big deal? So, you've done the same thing hundreds of times with no problem, but now you find out there's actually a policy about leaving children unattended. So, you bought some drinks and settled in, but you were interrupted by an employee asking you to accompany your child. Sign or no sign, what was wrong with simply complying with the rules?.. rules that apply to everyone in the store. For all you know, Borders has the same rule and you've managed to escape it in the past. What are you going to do if on your next visit to Borders you are asked to stay with your child?