Right now, the biggest shared value that I can think of is that you should treat others the way you want to be treated, and just have some good sense about what matters to you.
A lot of people, myself included, are excited about blogging and stuff like that, citizen journalism, but I do remind people that no matter how excited we are, there's no substitute for professional writing, no substitute for professional editing, and no substitute for professional fact-checking.
Milestones aren't what I think about much.
Craigslist does serve as a platform where people help each other for the basics, and also, shows people that the Internet is good for mutual support. I do feel pretty good about that.
Do something real, and keep it simple.