Signs you're abusing SOAP

Big red flag that you either don't know how to use SOAP or that you shouldn't be using SOAP for this job:

The only argument your call takes is a string, which contains XML which holds the structured data the server needs.

You should be either creating a SOAP object tree corresponding to the XML structure and passing your data as SOAP structured data, or you should be removing SOAP entirely and using simple HTTP POST.

Quake 2 in HTML5

OK, this just takes the cake. They've ported Quake 2 into HTML5 using a ton of JavaScript and such. Details on the developer's web site. I am amazed.