Travel a lot for work and even when I'm at home I go out to pubs, restaurants, places of interest etc. by myself.
I do enjoy meeting new people, so far I've found that the younger and much older generations seem to be a lot more open to talking to a stranger, it's best to engage the guys in a group first, a shabeen is always fun, people in JHB North/PTA can be seriously racist, Cape Town tends to be cliquey but awesome once you're "in", Free State has ridiculously friendly people, UK people put the Free State people to shame, don't attempt to communicate using translation tools in a foreign country and when trouble comes politely bow out regardless of how wrong the other guys is...
...And most importantly smile!