You may notice "I like" and 1-3 little icons showing up near people's names when they post. This is a new feature we are trying out called "bumper stickers." Right now it's limited to moderators while we work any kinks out, but stay tuned.
Bumper stickers, (once they enter general availability) are meant to be a way to fly the flag for your favourite technologies. I Like Tomcat, Ubuntu and Eclipse this week, but I'm planning on loving Android and GWT in the near future.