The most basic definition of web site usability is whether or not users can quickly accomplish a given task on a website without obstacles.  Obstacles can be long download times, scattered navigation, poor design, dated styles and many more issues, all of which can affect how users access your site and/or perceive your library.

Many of the web sites developed by public libraries do not adhere to web design standards or best practices. When Laura Solomon did a study (PDF) of Ohio public library websites in 2004, she found that only 17% of Ohio libraries met more than 80% of accepted criteria for usability. As new devices for accessing the Internet, such as the iPhone and other such smartphones, become more prevalent, it will become ever more critical for public libraries to have well-designed, standards-compliant web sites. OPLIN can help by fulfilling an original purpose -- enabling libraries to compete with other Internet information providers -- in a new way, focusing on building good library web sites as well as building good library Internet connections.