Microsoft just announced that Cortana now works with IFTTT. Cortana has had an appalling lack of third party skills (still does) but at least IFTTT offers some hope to folks who have services and devices that are not natively supported by Cortana but which have IFTTT support.
One of the neat things Cortana and IFTTT can do is post to Facebook, Twitter, etc. I can be working in the kitchen and ask Cortana/Invoke to TWEET or post to Facebook.
I’m sharing the recipes for these for others to play with below.