One more contest before everyone hits happy hour today. BigTinCan Mapper Pro is a cool app that lets you be a part of OSM (Open Street Mapping) by mapping your area and adding points of interest. The app lets you track your route, check out live GPS details and even send the map as an ALX or GPE file to a PC. BigTinCan Mapper Pro obviously isn't for everyone as it targets a specific audience, but if you want to help map the world then you should absolutely check it out. It is a very cool app and a great OSM utility. BigTinCan Mapper Pro sells for $4.99 in the CrackBerry App Store, but you can win one of 50 free copies by leaving a comment on this post. A slimmed down free version is also available. Contest ends this Sunday at Midnight PST. Please only leave one comment, multiple entries won't count.