I get the best response using blog posts that I illustrate with photos of the subjects. My novel is just getting started. My blog is at http://garryrogers.com.
Rachel Carson's hard-hitting factual investigative book, Silent Spring comes to mind. These days it seems like every movement requires social media/marketing, i.e. your blog needs to be networked with other similar blogs, then to Twitter, etc. Also, website, is sexier than blog imho, which is what you have essentially. Design it so About is landing page, and other categories are navigable along a top tab. Just my thoughts, good luck, brother, I like what you're doing.
I think it depends on the question if the followers are interested "to do something" on the issue as against merely interested in knowing about it. Electronically also, it is too easy to post a question and to liking a page, sending the manager of the blog or one that maintains the site scrambling for answers, thinking his answers would do something in return to the issue - but they don't.
I am with a small group of concerned people working to save the Sumatran rhino in Borneo from extinction and we have juggled the idea of facebook page and a blog. We decided against the idea. Four years down the line, the stakeholders that matters are the governments, the scientists, the doctors, the workers and the donors - something that we think could not be reached via facebook or blogs. We maintain close contacts with all of the stakeholders and communication on the issue are about being real.
Abdul, you are spot on. The reason I am trying to popularize nature conservation using fiction is that my single vote/voice has almost no influence on my political representatives. I am working on a second novel containing a conservation theme, but unless I get lucky and get a major publisher, my reach will be limited. I need more followers! Please visit/follow my blog (http://garryrogers.com). Leave a comment telling me what to do to help you and I will do it.