RAN- Grassroots or Astroturf?

The following is some information that I found on the Rainforest Action Network's website (ran.org) about who they are, what they are and why they do the things they do:

Rainforest Action Network (RAN) is made up of 36 staff members in San Francisco, CA and in Tokyo, Japan, plus thousands of volunteer scientists, teachers, parents, students and other concerned citizens around the world. We believe that a sustainable world can be created in our lifetime, and that aggressive action must be taken immediately to leave a safe and secure world for our children.

Rainforest Action Network (RAN) works to protect the Earth's rainforests and support the rights of their inhabitants through education, grassroots organizing, and non-violent direct action. RAN accomplishes its mission through dynamic, hard-hitting campaigns that work to bring corporate and governmental policies into alignment with popular support for rainforest conservation. RAN works in alliance with environmental and human rights groups around the world, including indigenous forest communities and non-governmental organizations in rainforest countries.

We're not just about rainforests! Over the last twenty years, RAN's mission to protect forests and their inhabitants has evolved into a multi-faceted master plan. Ending resource extraction that evicts indigenous communities is connected to cleaning up America's addiction to oil, which is connected to climate change and more... In short, we're out to transform the global economy. And we're doing it.

Their efforts concentrate mostly on forests, climate, human rights, energy, corporate power and peaceful protest.

Some consider the tactics that RAN uses in order to get businesses to change their practices radical, but I do not believe that would effect they are considered astroturf or grassroots.

After browsing through some of their most recent annual reports most of their donors are individuals, foundations, and many businesses that are not nationwide.Some of the donations are labeled anonymous. Also the staff of RAN, in my opinion, is not paid an obscene amount of money. (Figures for staff salary can be found here.) Because of this RAN appears to be a grassroots organization.

Sources:
http://www.ran.org/
http://ran.org/fileadmin/materials/executive/annual_reports/RAN_AnnualReport2006.pdf
http://ran.org/fileadmin/materials/executive/annual_reports/RAN_AnnualReport2005.pdf
http://www.discoverthenetwork.org/groupProfile.asp?grpid=6904
http://www.capitalresearch.org/search/orgdisplay.asp?Org=RAN100