with all this weather around lately, I thought it would be nice to have my RPi weather station send me updates. Initially I thought of twitter (very public), wechat (because I have it and it's a great service, but I would have needed a public facing webserver), but then someone mentioned a service called PushBullet.
I had never heard of that one. It so easy though. In 10-15min. you can setup an PB account (uses Facebook or Google to login), generate an API key, and start sending your mobile device some messages. I wrote up a bit of info here: https://www.raspberrypi.org/forums/viewtopic.php?f=41&t=133039&sid=65a056a660e1bdfc0e21f098c6204b9b&p=886852#p886852
You can push out Weather info, graphs, photos, RPi boot up IP Address, Bootup/shutdown notifications, status info, security notifications, Octoprint print notifications... this list is endless!
