About a year ago Pedro wrote a Greasemonkey script to add comments from PostGenomic.com to table of contents of scientific journals. Noel extended it with support for Chemical blogspace (see also this earlier item). Now, the later website is maintained by me, and I extended the aggregator software with molecule support, for example to show hot molecules on the frontpage (at some point my patches will be backported into mainstream.
Egon Willighagen (Sat,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: