For interactive sites, such as databases and search engines, it is vital that 'Help' on how to use the system is readily available. Users are likely to visit a site again only if they enjoy using it. Good design of Web pages will assist their use, and may make the difference between recommending a resource and rejecting it. What you think of the design is to some extent down to personal preference, but there are some general features to bear in mind. The list of evaluation criteria above may seem very long, but with experience of looking at Web pages, many decisions become almost instinctive.
Subject knowledge is, as with the selection of any other type of material, a great help.
More institutions are developing collection development policies for electronic materials, which further help the process of evaluating and selecting resources to offer your customers. References 1 .