While this is not an active blog, there are lots of inspiring stories. A kid writes about different issues and encourages others to join her social action projects.
Dale McGowan's website, author of Parenting Beyond Belief and Raising Freethinkers. Great ideas for parents in helping answer their childrens' questions and helping parents through conversations with family members of different beliefs.
If you sign up for this service, you get daily special offers for your area. When people buy the offers (usually half off), they decide what charity a portion of proceeds go to. Plan a Sunday School outing to one of the places, and you build community while raising money for your Sunday School or another cause of your choice. Offers I've used include half off bowling, half off Art places for kids..
Films and lesson plans about diverse families, gender, bullying, same-sex marriage, and more! Their mission is to "...move individuals and communities to take action for a more just world." Some films are available FREE!