Just wanted to remark that I really like the new Map module in Lightroom 4. On an outing, what I do is use my iPhone with MotionX-GPS to generate a track log and then import that track into Lightroom. Then I just automatically tag all images I shot that time. Below is for example the Lightroom Map view this Tuesday afternoon's hike up to Isabelle Glacier from Brainard Lake in the Indian Peaks.
Click for bigger.
There will be some actual images from this place later.