I suggest changing the headline "Solar Fire Campaign - Step 1" to a benefit driven (to the target donor) headline and a short introductory paragraph right below the headline that describes the essence of what you want the donor to help you accomplish. Make the headline and TITLE the same. Make the headline a H1 rather than a H2.
When "
http://www.solarfire.org/Open-Source-Campaign" is shared on
Facebook, Facebook selects irrelevant content from the page. I suggest to reorganize the content such that Facebook and other social media websites select the TITLE or headline and the short introductory paragraph as mentioned above.
An example headline could be:
"Join us to sustainably raise the living standard of millions of people"
Casper