We’ve created a new tool designed to monitor GoodData reports - and if certain conditions are met, to send a message to another system. It was design for the purpose of Salesforce Chatter integration, but could conceivably be used with Yammer, Twitter or other messaging systems.

Here is a beta download: (tar.gz, zip). The tool has many similarities with GoodData CL. Documentation and examples are included in the download, however here are links to view them online:
Installation
Config XML Documentation
Salesforce Chatter Example
The core of GoodData Notification tool is shared with GoodData CL. If you want to try building your own connector into a different messaging service, follow the instructions on how to build GoodData CL, but in step 6, instead of doing cd cli-distro, use instead the notification-distro: cd notification-distro and then resume the original instructions with mvn assembly:assembly.