Hey.
Like windsheer said, its about being streetwse.
Lagos is not as deangerous as jo-burg,but then, thats just an opinion.
All you need is some common sense and please, dont stray too far from your hotel at nigth with people you don't trust,or know well!
Lagos has a way of intimidating one,but it eases off after a while its not really as people like to paint it.
Port harcourt is nothing different and is a smaller city.
Girl. Go out,have fun and have an open mind.
Don't listen to those who'd rather paint africa as a place with lions and tigers running in the back-yards.These cities have a lot to offer if you're just a bit careful.