From the article :
The web site is your library's most important feature. Think about it: Where do people go to find out if a book is available, or if you carry a particular DVD or magazine? Patrons use the web site for numerous functions, such as renewing materials, placing holds, requesting information, and accessing databases. The homepage is the place they turn to look up your hours, branch locations, policies, and events. Whether users are at work, at home, in your building, or on their iPhone, the library's web site is the interface that you provide for them.