Liquidpub 1 is an EU project within the “future and emerging technologies” category whose goal is to capture the lessons learned and opportunities provided by the Web and open source, agile software development to develop concepts, models, metrics, and science support services for an efficient (for people), effective (for science), and sustainable (for publishers and the community) way of creating, disseminating, evaluating, and consuming scientific knowledge [1]. Novel services for science are a hot topic these days. From social bookmarking sites to online ranking of scientists, these services try to assist scientists in sharing content and assessing people and their scientific contributions. These services are however still very much anchored to a traditional notion of publication and are only scratching the surface of what can be done to help scientists collaborate for the greater good. Examples of Scientific Services. An example of services that Liquidpub intends to deliver is that of Liquid Journals (LJ), that redefines the traditional notion of journal which was born at a time where the paper was the only possible form of non-verbal knowledge dissemination, printing was the scarce resource, and therefore peer review and pre-publication filtering was necessary. Liquid journals are based on these notions i) separation of publication from inclusion in a journal: contributions are posted online (without any review) or published in traditional journals following a traditional process, and then they can be included in an arbitrarily high number of LJs. Each LJ decides policies and rules to determine if a contribution is included. Essentially, LJs are ways to aggregate all sort of available content based on what is interesting and relevant for its readers. This can be done via review, collaborative filtering, looking at journals of people we consider highly, etc; ii) Everybody (even individuals) can create and run LJs; iii) Papers are not the only source of knowledge. Blogs, experiments, datasets, slides, comments/feedback and the like are valid and useful forms of dissemination, some of them having the additional benefits of allowing early dissemination and therefore better collaboration. Including feedback as a form of contribution has the effect that it is considered as part of what is evaluated from a scientist and therefore it encourages giving feedback, which is fundamental to the scientific creation process. All is driven towards what the purpose of a journal should be: providing people with interesting content to read, minimizing the dissemination overhead, and maximizing the collaboration. Current journals are a