Postcards and business cards for NancySites.com. We are using the postcards in combination with an Adwords campaign, targeting potential referral sources for client's private practice. Having used the advertising platforms on LinkedIn, Facebook, Bing/Yahoo, and Google, I am interested to do a cost-per-referral analysis including the postcards when the campaign concludes. Starting cost-per-click on the social networks exceeds that of a postcard (with stamp), and it takes roughly 3 clicks via Adwords to equal one card. Though it takes more time to fill in a postcard, the personal touch can be invaluable. If you know your target market, it's worth considering. I'll keep you posted on how it goes. Shout out to Moo_com for doing a great job with this batch.