Example recipe ideas:
- If a new Tumblr post, make a thread about it on my XenForo
- If I get a user alert on XenForo, change my Phillips Hue lights to red color
- Share my News subforum's posts to my forum's Facebook Page
- Post a thread when congress passes a new bill (via Sunlight Foundation channel)
- Post a thread when I post new items in my Etsy Shop (via Etsy channel)
This isn't something that could done with an add-on; to be a channel on IFTTT I think XenForo would have to do it themselves. Maybe something to thing about for XF 2.0 series?