Some of the sites I'm currently following in my RSS reader, listed here from A-Z

All Things Reconsidered
All Things Reconsidered is a collection of articles, thoughts, and provocations from both the JustMeans Team as well as the top leaders and thinkers in social responsibility.

Alltop - Green
Alltop is an editorially selected aggregation of content from around the web on a variety of topics. The Green Alltop site is a good starting point for the latest green news.

Egglog
Egglog is the blog of Egg, a communications agency based on an entirely different foundation - one that focuses exclusively on sustainable brands and organizations.

Clean Edge
Clean Edge is a leading research and publishing firm helping companies, investors, and governments understand and profit from clean technologies.

Green Metrics, Clean Metrics
The blog of CleanMetrics, which is dedicated to solving problems in environmental sustainability through innovative software tools and consulting services grounded in robust analytical techniques.

Climate Solutions
Climate Solutions mission is to accelerate practical and profitable solutions to global warming by galvanizing leadership, growing investment and bridging divides.

CSRWire
CSRwire is the leading source of corporate social responsibility and sustainability news, reports and information.

Edible Portland Blog
Edible Portland's goal is to be a resource that makes eating, growing, and enjoying our local abundance an everyday pleasure.

Joel Makower
Joel Makower is a writer, speaker, and strategist on corporate environmental practices, clean technology, and green marketing.

Paul Graham Essays
Paul Graham is an essayist, programmer, and programming language designer. In 1995 he developed with Robert Morris the first web-based application, Viaweb, which was acquired by Yahoo in 1998.

ReadWriteWeb
ReadWriteWeb is a popular weblog that provides Web Technology news, reviews and analysis.

Silicon Florist
A blog about the Silicon Forest (a tech corridor comprised of Portland, Oregon, and the surrounding areas) startups, blogs, and events that fly below the RADAR.

Springwise
Springwise and its network of 8,000 spotters scan the globe for smart new business ideas, delivering instant inspiration to entrepreneurial minds from San Francisco to Singapore.

WorldChanging
Worldchanging is a solutions-based online magazine that works from a simple premise: that the tools, models and ideas for building a better future lie all around us.