Babysitting Exchange

So I was thinking that all us moms should partner up with another mom in MOPS that has the same number (or close) of kids and exchange babysitting for eachother. If everyone who is interested comments their name and number of kids I will try to pair everyone up with another mom. That way when we need a sitter we can call upon our partner and set up an exchange, so we don't have to pay a sitter. Money's tight for everyone, but quality time with the hubby is essential, so let's help eachother out! Whatcha think?