The name stands for If This Then That, a phrase that represents the way its “triggers” (this) and “actions” (that) are used for the different “channels”. For example, if this is posted on Instagram or SoundCloud, do this with it in my Gmail inbox.
It also enables users to add a note to their Google Calendar whenever add a new contact on your iPhone; automatically post links on a Facebook page when new stories go live on your WordPress blog; connect fitness devices made by Jawbone and Withings to a host of web services.
IFTTT is currently for iPhones, you can download it here.
Image by sekimura.