New opportunities to/for what?  for social change?  thinking more about this....

 i do think that one tool, not necessarily an online tool, yet, is education--education about the resources available to advancing social benefit through the Web.

 As it stands now, nonprofits are not the most technologically advanced field.  And, quite frankly, many hold the opinion that there isn't time to learn all the tech-stuff to effectively use the Web as a resource.  i think this "first glance" that nonprofits take at technology is fair for them to use.  Most people did not go into nonprofit work to be techies--they have a specific goal and need that they want to achieve.  most nonprofits didn't go to school to learn tech *stuff*, and it's rather daunting to approach the most effective technology without having that knowledge.  most tech stuff is super geeky and hard to understand if you're not well-versed in that language.  so why would nonprofit groups, who mostly have no grounding in technology, even attempt to use their time figuring it all out, when they have to get their crap done so that they can go out and save the world.

now that i've sufficiently gotten off track, and still have not answered the question, i do believe that education about how to use technology for social benefit is certainly where things need to go, in order for the web to be a useful resource that is used to its fullest potential.  what tools embody this?  not sure yet.  this website does....