The emergence of a citation cartel. "Cell Transplantation is a medical journal published by the Cognizant Communication Corporation of Putnam Valley, New York. In recent years, its impact factor has been growing rapidly. In 2006, it was 3.482. In 2010, it had almost doubled to 6.204. When you look at which journals cite Cell Transplantation, two journals stand out noticeably: the Medical Science Monitor, and The Scientific World Journal. According to the JCR, neither of these journals cited Cell Transplantation until 2010. Then, in 2010, a review article was published in the Medical Science Monitor citing 490 articles, 445 of which were to papers published in Cell Transplantation. All 445 citations pointed to papers published in 2008 or 2009 — the citation window from which the journal’s 2010 impact factor was derived. Of the remaining 45 citations, 44 cited the Medical Science Monitor, again, to papers published in 2008 and 2009. Three of the four authors of this paper sit on the editorial board of Cell Transplantation. Two are associate editors, one is the founding editor. The fourth is the CEO of a medical communications company." (from Scholarly Kitchen, via Andrew Gelman.)
Citations on the fly. WorldCat previously, the world's online largest catalog of library holdings, got its own Facebook page in early 2008. That was pretty cool, but now WorldCat has upped the ante again by introducing another Facebook app called CiteMe. Using CiteMe, Facebook users can look up any item in WorldCat (there's over 1 billion of 'em) and get its properly-formatted citation (choose from APA, Chicago, Harvard, MLA, or Turabian styles) instantly. For more than a few citations, you can still build a bibliography of any size in your favorite style, directly on the WorldCat site.
Ottobib does what it sets out to do very well: take a list of ISBN numbers, the international standard book number system, and generates citations for you. It's as if it is automatically making bibliographies. (ha! get it!) Currently supporting the MLA, APA, and Chicago Manual of Style citation formats.