Web API V.S. Web Services

@ Web APIs are application programming interfaces that can be called over standard Internet protocols.

@ It is helpful to think of a Web API as a series of Web services, each of which has one or more procedures that can be called using the Internet.

@ Web APIs are typically a related collection of Web services.

API : Internet Business from where?

I think I might should start my Internet Business from and on the great ones' APIs, actually, mighty services and resources.

Google API
Flickr API
Live API
ebay API
amazon API
Yahoo API

不是曾经就告诉过自己一定要站在巨人的肩膀上发展吗？为什么不通过API呢？