There is now a GeoTools CiteULike library for useful papers, articles and other references relating to geo-spatial applications and computational geometry.
The library is freely accessible to search and browse. Items generally have keywords, abstracts and citation details plus a link to the full text where available. You can comment on an item, for example to point out errors or limitations in an article or to suggest an application.
You can also contribute your own references to the library (please do !). For this you will need to register with CiteULike.