The vibrant technology community here in Minneapolis has at least one more event left in the waning days of 2012. And to wrap the year, 7 minute demos with no presentations at MinneDemo, a bar camp-esque event focused around demoing new tech. I love the cookouts these guys have, but it’ll probably be too cold and snowing to have dozens of people milling around a keg, so let’s go indoors and watch people demo tech that hopefully works. A little of what they have in store for us (to quote their site): As always, MinneDemo features home-grown tech without the BS. The rules are simple: 7 minutes, real working technology,…