THIS COMMUNITY HAS MOVED TO http://FORUM.MAKERFORUMS.INFO
Here are a list of the Social Media communities that everyone here is jumping ship to: I highly suggest https://forum.makerforums.info/ - all of our content here has been moved there and ownership of posts even continues if you log in using your Google account.
http://www.reddit.com/r/3dprinting - Self Explanatory. Reddit is pretty big/popular.
https://mewe.com/join/3d_print_everything Similar interface to G+, no public content.
https://openbuilds.com/forums/3d-printers.31/ - long time supporter of the community
http://forum.toms3d.org/ - @Thomas_Sanladerer 's 3D Printing Forums (semi-famous 3D Printing YouTuber)
#RepRap on the Freenode IRC is the suggested venue if you like “chat”.