I think the biggest opportunity with Wikipedia, rather than social integration (which happens a surprising amount on my Facebook and G+, much to my delight), is semantic search and display.<p>Wikipedia's goals in the past five years, in my opinion, have been revolving around the desire to amass as much knowledge and meaningful content as possible -- which they've done to a rousing success. Now I think it's time for them to consider systemic ways of paring and presenting that content in ways that carry meaning and urgency in a way that reading a 30-page article about Roman antiquity doesn't.