While the usage of the consumer transformation is quite popular, one of the feature that PowerCenter offers, which is rather less used, is the "webservice consumer source". The video demonstrates how webservice consumer source is used in PowerCenter with the pro and cons of the same.
How to automate the repository and domain back up process for disaster recovery in PowerCenter
How to unassign services from an expired key and assign them to a valid key in 9.1.0 and 9.5.1
How to find in which host the Repository Integration service is running in a multi node domain