Support Supernatural Season 5 Post Card campaign has begun.
After every episode during Season 5, Support Supernatural will post addresses to the companies whose commercials aired during Supernatural. The site will supply links to where fans can go to print off post cards to email those companies, as a way to thank them for sponsoring the series.
For more details, click here.
Note: The campaign page contains future episodes' titles.
Source: Support Supernatural.
Disclaimer: WinchesterBros.com and MediaBlvd.com are in no way connected to the campaign.