I'm CTO at a local newspaper chain. I ran a seminar on how to digital advertising, then ran $500 in advertising to promote the event -- all as a test to see which advertising mediums I could use to get people to show up to learn about advertising.
Here's the data and a summary:
https://docs.google.com/spreadsheets/d/1DsJYUYETwQ7a-hISFPcC...
http://www.davisenterprise.com/special-projects/how-to-waste...