A bit old topic. But still there is a talk on it among webmasters. Google’s SEO, Matt Cutts agrees that keywords in URL will help you in SEO. But still some famous blogs are using numbers in URL. 

But when I tried a search with “how to get google sitelinks” is Goog, The first result was a blog post by Jonathan Hochman on which the URL contains only sitelinks as keyword. But another post by DavidLee have the entire words in URL, got SERP ranking of seven in the same search. So, here some other facts overcome the priority of the URL.  May be the title text matters. But both are having the same titles. What I fount here as the plus point for  post by Jonathan Hochman is, the domain authority. Here domain authority wins over URL.

Another search for “Nantucket” returned a result of nice number of pages with keyword in URL. But sites like www.ack.net finds its position in top ten result.

My conclusion:

The keywords in URL is one fact among thousands of other points. So, keeping targetted keyword in URL will help you for SEO.