Privacy issues aside, it's hard to complain too much about products like Bing Streetside and Google Street View, considering such tools were until recently nonexistent. But Microsoft has previewed its next-generation mapping tool, dubbed Street Slide, and it promises to up the ante in several ways. First, consider the jumpy nature of current offerings, which offers users viewpoints only every so often. Street Slide's approach is to piece images into a continuous strip,