I travelled solo around South America when I was 23 (and was blonde at the time) and never encountered any problems (maybe was a bit jammy, I wasn't always that well behaved). However at the time I spoke Spanish pretty much fluently and so managed to really get to know the locals and got loads out of the trip and this possibly made me look less vunerable or nervous. I did hear stories though so it's worth not getting too complacent. If it's really late at night get a cab home with someone else etc... The only probs I encountered were the Peruvian transport strikes. Absolute nightmare. I went through Ecuador, Peru, Bolivia and Arg (bit of Uruguay/Chile) and had a blast. I would say the only places I felt a little jittery were Lima (but was my first point of call) and Quito at 4am. Personally, didn't warm to Peruvians (although of course this is a sweeping generalisation, there were some lovely people). Just found they were a bit resentful of you being there. Loved Ecuadorians and Bolivians (Bolivia had the lovliest people). Buenos Aires is my favourite place on the planet and you will eat like a queen (also throughout Arg. in general). I've been back recently and although prices have risen a lot, what you get for your money is great. Good quality bottle of red, thick steak, chips and salad for two people, i'd say about ?10 per head for a nice restaurant in Palermo. You could do it a lot cheaper though. Also did Iguazu recently which was worth going the extra mile for. Other favourite things/places include: Ecuador - Cuenca, Banos, the Devil's Nose Train Journey, Canoa, Vilcabamba. Peru - Trekking in Huaraz, Inca Trail and Cusco, Colca Canyon and Arequipa, Lake Titicaca Bolivia - Salt Flats (I did it from Tupiza - a bit quieter than Uyuni and quite a cool place), La Paz, The World's Most Dangerous Road, Potosi. Arg - Salta, Mendoza, Buenos Aires, Iguazu, Bariloche - down to Patagonia. One thing to mention is, being on your own is the best way to travel. South America isn't full of bus loads of 18 year olds who all know eachother from home. There are some of course, but most go to Oz and Nz. Most people are a little bit older and lots of people are on their own so it's really easy to make friends, especially if you aim for hostels with a kitchen or bar area. Anyway, back to work...