Social citations: using Mendeley API to measure citation readership

"Quick note on an app I threw together using the Mendeley API that I discussed in the previous post....The basic idea is to embellish make the list of literature cited in an article with information that might help a reader decide whether a given citation is work reading. One clue might be how many people on Mendeley are reading that article. So, my app takes an article, extracts the list of cited literature, and for each article with a PubMed identifier it asks Mendeley "how many readers does this article have?" For now the app is restricted to using articles from the BiomedCentral series as these have Open Access XML with literature cited lists that contain PubMed numbers (PLoS articles, for instance, don't have these, for now I'm avoiding the overhead of finding identifiers for the articles). I'm using PubMed identifiers as the Document Details method in the Mendeley API doesn't handle DOIs at present...."