Originally found here: http://www.marginalrevolution.com/ (my favourite economics site)…The link won’t be to this article by tomorrow, but it’s always a great site.
I guess some people don’t ponder the economics when deciding to have children. I suppose that because emotion overrides logic in that case.

and more on the same advertising here:
http://www.huffingtonpost.com/2010/12/09/ads-targeting-nyc-private_n_794496.html?ir=Education