Word Collectin From Tech websites

1. a nifty feature 时髦的特征   Yelp has a few nifty features on its network that gives it that special sauce.
2. make it simple to

 关于点评网站Yelp和它的mrjob的解释：

Check out Yelp.com's newest Open Source Python library, mrjob. It makes it trivially easy to write MapReduce jobs in Python and then run them on Amazon's Elastic MapReduce service. Now if you want to do distributed computing, you don't even need a cluster of commodity machines; you just need a credit card.