In case you aren't familiar, IFTTT is "if this then that". A lovely platform for automating a ton of things. For example, I have starred emails and "saved for later" feedly articles automatically save to an Evernote notebook. And, when I change my Facebook profile picture, it automatically updates my profile pictures on lesser-used social media sites. And, when I am tagged in a photo on facebook or post a photo to instagram, it automatically saves to my dropbox. And, the best one, when I post a photo to Instagram, it posts it to Twitter but it posts it as a twitter picture, not a lame link to instagram. It's freaking awesome.
Stamplay is a brilliant idea. I haven't played with it so I can't comment on the execution, but it promises to be able to build simple Hacker News / Stackoverflow type sites without having to manage a database. Not that I think this is the best way to do things from a backend perspective, but I'm always down for making backend development more accessible to people.
Some current integrations include: