As started in the last feature of the week we release this week additional information about BibSonomy which will help to integrate BibSonomy into other services like catalog systems of libraries. As discussed the former FOTW BibSonomy relies on different hash keys to find similar publications. The needed information to compute these keys is described here. The page includes a small demo and a java example implementation which is used in BibSonomy to compute the different hash keys. This implementation can be used to compute the same hash keys in other system. Together with the possibility to access the tag cloud of a publication by a hash via BibSonomy's API a nice integration and a community summary of a publication can be integrated into every system.
We think this is a first step for a tighter integration of Bibsonomy and libraries catalog systems or any other similar system.