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Change the world, techie style
If you often check your cellphone, use it to make a change. Many local, national and international charities accept donations of $5 to $10 via text message. The donation is added on to your cellphone bill. To learn if your favorite charity accepts text donations, check the running list on the Mobile Giving Foundation's website.
And while you're catching up with friends on Facebook or Twitter, check for charity deals you can share with them. There are multiple websites that donate money, food or supplies for every click you give them on their site.