Sites that follow marketing trends

Looking for the latest news and views in social media, green marketing, and more? Here are three sites I check for reports on marketing trends:

• Social Media Today. Thoughtful insights into latest in social media marketing via blogs, tweets, mobile devices, and more.
• Environmental Leader. Daily dose of green marketing and related issues and trends from around the world.
• Chief Marketer. Timely CMO interviews plus analyses and critiques of marketing trends and activities, digital and otherwise.