My process was first to capture their relationships in a mindmap and try to standardize the format to make it easier to compare them. It was similar to researching a competitive space for a product and then attempting to organize the information in order to make valid observations and identify challenges and opportunities. The information, since it was text based with more than 7 levels of detail, became too unwieldy to share in a graphical form. Google Knol provided a great platform to share all of the manifestos and encourage discussion. A cross between a blog and wiki, Knol was very easy to set up and use.
Join the conversation, contribute your insights - what do manifestos reveal about the nature of software product development?
I will return to develop a taxonomy to further the discussion of the manifestos.