###Group "[publiclaboratory](https://groups.google.com/group/publiclaboratory)"###

8/24/2012: 454
9/12/2012: 530
9/19/2012: 646

###Group "[grassrootsmapping](https://groups.google.com/group/grassrootsmapping)"###

9/12/2012: 486
9/19/2012: 559