To link your AdafruitIO account, click your username in the upper-right corner, select Services, then select the All Services link at the bottom of the page. Then, type Adafruit into the search bar, and click the black box marked Adafruit, which should bring you here:

After that, click Connect and enter your AdafruitIO credentials. You'll want to do this for any social media networks that you'd like notifications from as well. I added Twitter and Twitch.tv accounts.

Now that we've linked our accounts, we should take a step back to Adafruit.IO and add feeds for our social media accounts so we can select them when we create our IFTTT applets.