Coupling issues in SOA development with .NET

Recently, I have been working on an SOA project using WCF.  As development moved toward integration of multiple services I found the coupling of services to be a real pain point.  Although services operated in a loosely coupled fashion, the actual implementation of the services was less ideal.

Scalability and Architecture Issues of SME Web Content Management Systems

Many low-end and middle-end web CMS providers profess (indeed stress) scalability and extensibility but in my experience the architectures of those systems are fundamentally flawed in achieving these aims. What are your thoughts?