In Ariadne, a UK based digital library magazine, Daniel Chudnov and friends hypothesize the need for library groupware, tools that assist scholars in holdings and reference management. Cloaked in terminology I'm quite unfamiliar with, the essence comes to me as that future users will expect libraries to integrate Web authoring tools (weblogs, social bookmarks). The concept of a "link resolver" comes up and as far as I can tell simply refers to an electronic broker to deal with the fact that most major libraries not only have core holdings, but a lot of other complex access relationships. Therefore, where link traversal should actually wind up becomes a difficult question.
The paper does an excellent job of outlining some of the issues, but could have used some more technical meat for my taste. However, it looks like Chudnov has developed an open source del.icio.us knockoff called unalog