You can play with the current methods using the PHP Service Browser on the public SWX gateway.
I'm using the SWX Service Explorer to test out the new authenticated Flickr methods in the SWX Flickr API. I will be releasing these as part of SWX Beta 1.2, which also includes improvements to the Service Explorer (previously the Service Browser).
What caught my attention is how quickly they were able to port it over from .Net to Mono. I wonder if Microsoft may actually stand a chance in wooing the Linux crowd with synchronized releases of Silverlight across all platforms?
If you watch the video in the post about the lightening strike, you might see a few familiar faces from Brighton. :) The initial comment you overhear is yours truly branding the "stunt" (we initially thought it was a pre-planned show), "one of the dumbest ideas of 2007!" We later found out that the building had actually been struck by lightening and that the fire doors in the roof opened due to a malfunction.
Unfortunately, this configuration step is currently necessary because I have been unsuccessful at getting the source code for the latest version of the service browser (which is the same one that is used in Amfphp) and/or the source for the upcoming universal service browser from Patrick Mineault. I will keep trying badgering Patrick to try and get the source so that this configuration step can be removed in future versions of SWX.