Don't have one? Whether you do or not, I'd like you to consider adding the following simple guideline to your social network behavior.
If the world would be a better place if more people saw the thing you currently see, click share and select "Public."
Not exactly rocket science, but much easier than recycling. Join the experiment, try it for a month and let's see what happens. As a bonus for actually clicking this link, below you'll find the things I shared on Google+ in September and October of 2011 that fit this criteria. I'll be going through the subsequent months in separate posts.

I'd also like to share a different project with you, The OnePost Project.
Founded on the principle that the one question you could ask any stranger and get an interesting answer to is:
"If you could tell the whole world just one thing, what would it be?"
Instructions for participating can be found a the link above.
The Bonus Stuff: