Maybe tech demos are your most favorite thing in the world, but even if they are not, Google Demo Slam is trying to make them, at the very least, interesting and personal. The site, which had a soft launch nearly a month ago, appears to be growing, and it is getting special treatment on Google’s front page today. The whole purpose of the site is to encourage users to post tech demos featuring technology — primarily by utilizing one of Google’s technologies. Then, users can submit these videos to Google Demo Slam, and if it is selected, it could become a contender. If it gets enough support, it can become…