I've been doing some experimentation with If This Then That service.
This service is a web application that allows you to concoct "recipes" between different "channels," e.g., send all my Tweets from Twitter to Facebook (or Google Reader, Evernote, etc.).
Currently, there is a limited number of channels. I'd like to be able to send an alert to another custom application (even a desktop client, perhaps), but such a channel doesn't exist.
Aside from using an existing channel like email or Twitter, and triggering a special email or Tweet as output from IFTTT, with which the custom application could read the result by parsing the email or using the Twitter API, is there a more optimal way to make my own channel to control my custom application directly?