This paper assesses the retrieval effectiveness of automatically constructed inter-document hypertext links in Information Retrieval (IR). The objectives of the experiments described are to obtain evidence concerning the usefulness of querying and browsing automatically constructed IR hypertexts. Links are built by using IR techniques, as these enable rapid, automatic production of hypertexts from a document collection for accessing the collection itself. These tests are carried out in a laboratory environment and through simulation of link browsing. Results of experiments show that browsing has little impact on the retrieval of relevant documents if used in place of querying or relevance feedback methods, though may be practical if used in combination with them.