Ever wonder how far you walk each day? Use this cool Google Maps pedometer mashup to figure it out-- basically you just hit "start recording" in the left hand menu, then double click for each leg of the walk. Be careful to drop points at each turn, otherwise you end up with diagonals that go right through buildings. In the right hand column you can calculate calories burned, elevation, and a few other things, and also get a permalink to the map for linking or putting in an email. Fun fact: our daily walk to Gothamist HQ and back, measured on the map, is just shy of two miles!