Planning a leisurely driving trip around Australia and looking for some good stopover options? People Going Places offers information on places to visit large and small throughout Australia, including a particularly useful "show me interesting locations between two points" option.
Warning: the site is sponsored by caravan manufacturer Jayco, so it's aimed at the same "grey nomads" market that has you cursing stupidly slow drivers every time you hit a freeway. Caravans generally induce a love/hate reaction in most people -- personally, I'd rather rip out my own toenails with rusty garden shears than stay in one.
But even if you're not interested in the recreational vehicle aspects and figure you can share trip information more effectively on Facebook, the ability to highlight locations worth visiting between two places is a useful travel planning resource.