In a completely new twist on the interactions between email and social media, email service provider, Campaign Monitor is using social media to try and pressure Microsoft to improve its HTML interoperability in Outlook. It's not quite like challenging the Iranian election results, but it has collected more than 20,000 Twitter comments to try and get its concerns on Microsoft's agenda.
The good news is that Microsoft took notice and responded. The bad news is that I don't think the response is what Campaign Monitor was looking for.
Check it all out on its very clever Web site.