Leigh Dodds reports that Ingenta is delivering TOC data using RSS. The Tony Hammond article linked to has been widely noted.

To be precise: in excess of 20,000 new RSS feeds containing the latest table of contents data for the academic journals that are still being actively loaded into our databases. Like our friends at Nature, our feeds are available as RSS 1.0, with Dublin Core and Prism metadata at the item level. [Lost Boy: IngentaConnect RSS Feeds]