Homeschool Groups

I belong to quite a few yahoo homeschooling groups. I like to contribute on a limited basis. I like to share the freebies I find but mostly share on my blog and not in a group setting. I don't like a lot of conversation that doesn't pertain to the group. KWIM? My question...what homeschool groups do you belong to that have great information, help with questions and freebies? Something that doesn't require participation but welcomes learners of all kinds? If you want to check out my favorites they are Free Homeschool and Homeschool Resource Share.