SCALE's mission is to evangelize the advantages of Open Source software. Open Source software is any software that meets the litmus test of the OSI (Open Source Initiative). Examples of OSS are Linux and the various BSD operating systems, and applications such as OpenOffice.org and Firefox.
Our target audiences are both current and potential users of OSS. Those users can be individual computer users, educational institutions, or businesses.
The Expo's educational focus is composed of (but not limited to) technical seminars and booths where, among other things, both commercial software and hardware vendors, and local non-profit groups (for example, Linux Users Groups), participate in product display, and software demonstrations and tutorials, respectively.
Since we're both open source, and work on open source operating systems we're perfect at this convention. I will have Linux, OS X, and Windows versions available for people to try out.
I ran into the SCALE guys at the LUG Radio convention in SF (which I also attended for FoF). Good fun good times. Drop by if you have time and say hi.
You can visit their webisite for more info