The paper on userscripts describes how Greasemonkey scripts can be used to combine different information sources (DOI:10.1186/1471-2105-8-487). A trailer:
The web has seen an explosion of chemistry and biology related resources in the last 15 years: thousands of scientific journals, databases, wikis, blogs and resources are available with a wide variety of types of information. There is a huge need to aggregate and organise this information. However, the sheer number of resources makes it unrealistic to link them all in a centralised manner. Instead, search engines to find information in those resources flourish, and formal languages like Resource Description Framework and Web Ontology Language are increasingly used to allow linking of resources. A recent development is the use of userscripts to change the appearance of web pages, by on-the-fly modification of the web content. This pens possibilities to aggregate information and computational results from different web resources into the web page of one of those resources.
Peter et al. have been using this technology for CrystalEye too, but the paper was in a finalizing state when the userscript was announced, unfortunately.
BTW, we never have presents under the tree; we have Sinterklaas.