That article is way too vague to be of any use. There are a handful of small studies that show less-than-optimal results for pre-exercise stretching when we're talking about running.
Soccer, basketball, dancing, weight lifting, rock climbing, none of these have anything to do with those results, and you should talk to people who have been doing the activity for years about how to be healthy, not about.com.
I was wrong; there hasn't yet been a causal relationship established between pre-exercise stretching and increased injury (though some studies do suggest such a relationship).
The studies do agree in general, however, that stretching before exercise does NOT reduce the chance of injury.
Soccer, basketball, dancing, weight lifting, rock climbing, none of these have anything to do with those results, and you should talk to people who have been doing the activity for years about how to be healthy, not about.com.