I've mentioned that I'm playing soon in Austria (12 July in Lintz). The information is here. Note that the concert is open to anybody at all who wants to attend, whether they are participating in the rest of the conference or not.
I think playing at hacker / open source meetings is a good idea. I'm looking into using Perl to talk to the SC server, just so I can submit a proposal to a Perl conference. Of course, I spent some time as a professional perl scripter and I once wrote a web server in it for fun. My first-ever SuperCollider project had quite a bit of perl in it, as SC3 was really very alpha at the time. so it's not just a cynical ploy to get to play at a geeky gathering.
Also, leftist political conferences are a good fit. I've got American political music, for sure. I keep thinking about doing more of it, but my ability to manipulate non-English text is lower. I think I will do such a piece for the /etc conference, as I recorded a friend of mine speaking in French about feminism. (Do you want to be in the piece? Send me a recording, in any format, of yourself, speaking in any language, answering the question: "Are you a feminist? Why or why not?") Anyway, there's certainly plenty of American material to work with, alas.
So if you, dear reader, are doing some sort of conference about open source or hacking or programming languages or leftist organizing or any related field, you should drop me a line. Depending on the location, I may be able to cover my own travel expenses. I have no technical needs, aside from electricity and a sound system. If the venue is café-sized and/or in Holland, I can even provide my own sound system.
Hm, if only I had a few pieces in Esperanto . . ..