In print media this made sense because you saw the entire article and these quotes would be picked out. Then upon reading the article you then read the quotes i

In print media this made sense because you saw the entire article and these quotes would be picked out. Then upon reading the article you then read the quotes in context. On the web they usually appear directly before or after the sentence and make no sense to include. Especially when you take into account mobile users where there is usually no space between these quotes appearing and their use in the article.