Simplicity, a feature

Recently, at work, I had to use the XML-RPC.Net library and couldn't help smiling at this tongue in cheek answer in the FAQ section.

Why use XML-RPC instead of SOAP?

If your clients and servers are all running in the .NET environment there is no point in using XML-RPC: .NET provides excellent support for SOAP and XML-RPC doesn't have any features not provided by SOAP (other than simplicity).

- XML-RPC.NET FAQ