Flickr: Si1veryEarlier this summer, our 501 Tech Club friends in Austin, TX helped organize a Tweet-up blood drive with the Austin Social Media Club with great success: new folks made their way to donate blood after hearing about it through Twitter.

They're at it again this month -- September is Hunger Action Month -- helping to organize education and donation opportunities for the Austin community in the first ever Ham-Up Tweet-up.

Using Twitter like this reminds me of the Bat Signal -- but probably has even more potential for organizing support around a community need (since the signal just summoned one man in tights).

We're so glad to see local foodbanks and change-makers putting social media tools in action for social good! You can read more about the Austin Ham-Up here and here.

Want to join the 501 Tech Club in your area and support these kinds of initiatives in your community? Find out more, or start connecting in our online community.