Some references I'd like to save for potential personal future use.
Client-side token cache for WCF
"WCF by default maintains a cache for security tokens per channel instance (A channel is related to a contract). Therefore, it is not possible to reuse the same token for different channel instances.. I will show the required steps to build a client-side token cache to reuse tokens obtained from a STS"
SAML - STS implementation for WCF
"I finally decided to publish a STS implementation for WCF"
Using WCF WebHttpBinding and WebGet with nicer Urls
Removing the .svc extension when hosting in IIS in .NET v3.5