Bringing simplicity back to the Web computing. Automatic proxy generation grossly overcomplicated and "overcoupled" the simple idea of Web Services. The REST approach claims that it can help to resolve it with Resource Oriented Architecture vs. Service Oriented Architecture if latter is understood as a piling of strongly-typed RPC-like interfaces.
I just started reading a "RESTful Web Services" book by Leonard Richardson and Sam Ruby (David Heinemeier Hansson has authored foreword). It published by O'Reilly so it should be quality reading. Examples are in Ruby, Python and Java but they are amazingly possible to read.