This post is not exclusively related to DSP but I have come across an interesting site that could be useful to anybody doing research. The site is citeulike and,  as the name says, is a site dedicated to managing bibliographical references. The idea of citeulike  is similar to other web 2.0 sites dedicated to managing bookmarks. In this case, it is possible to create groups based on a topic of interest which can then be used to organize a list of papers (each with its corresponding link to thedocument itself) that can be shared by a research group. Groups also have available discussion forums  and blogs that could be very helpful when organizing research within a group.The citations for each paper can be directly imported from many popular research sites, and they can later be exported to BibTex format.