Travellers might find two categories of software application useful in planning and documenting their trips. In the first category are numerous applications like Mapquest for trip planning. In the second category are applications that enable trip mapping. Trip mapping enables users to add photos and other information as well as to share their maps over the Internet, while the journey is underway or on its completion.
Both of the following trip mapping applications use Google maps as their online map service, although each offers a different scale and kind of mapping functionality:
TravelPod "... because your trips are worth it. TravelPod's free travel blogs let you chart your trips on a map, share unlimited photos and videos, and stay in touch while you travel."
EveryTrail "the best way to share trips, connect with other travelers and find great new things to do."I can imagine that there are other examples of this type of application that need to be added to this list. Another avenue for future study could be a comparsion of these types of applications to each other as well as to the more advanced functions possible in Google Maps and Google Earth.
Wayfaring
Here's a specific type of mapping, for visualising 'foursquare check-ins'. Foursquare is a social networking site that allows a user to upload spatial coordinates and other information of where they are at any point in time. These applications mostly use Google Maps, although Open Street seems to lie behind...
Tripline
foursquare
weeplaces