This page displays the number of entries (articles) in PubMed (Medline) published every year, that conform to search strategy (such as a phrase) you enter.
http://www.citeulike.org/user/username/order/pubdate,desc,last e.g. http://www.citeulike.org/user/AJCann/order/pubdate,desc,last To list your own publications in date order, flag them as your own papers in the edit dialogue, then: http://www.citeulike.org/profile/AJCann/publications/order/pubdate,desc,first
EndnoteWeb, RefWorks, Connotea, CiteULike, Zotero, Mendeley. Nice summary of the state of the art by Martin Fenner. Conclusion - not much to choose in some ways - personal preference!
This is the winning entry into the Elsevier Article 2.0 Contest by. It demonstrates how scientific article publishing can be improved by applying Web 1.0, Web 2.0 and Web 3.0/Semantic Web approaches to add value to article content. The application enhances content navigation, allows commenting on specific paragraphs and features of images, and allows facts to be asserted about the article and its contents.
For collecting and disseminating scientific information, the most popular tool is Wikipedia (70.4% of total respondents), followed by emailing peers (67.9%), and online forums (42.0%). Those pursuing professional development are most likely to email their peers (49.4%), utilize the LinkedIn network (43.2%), or visit Wikipedia (39.5%). Social networking is most popularly practiced with Facebook (59.3%), emailing peers (49.4%), and blogs (42.0%).