Phil, I think those who are interested in volunteering most of the time do not know where to begin, or have no idea of what avenues of service are available. If specific projects are listed or offered, with estimated time or funds required, interested individuals would have a better and more clear idea of how and what they can or can not contribute.  I might be completely off on this, but I personally have not seen  a list of possible activities. 

Regards

Houtan Mostaghim

hmostaghim@gmail.com