@Gregory: it's a bookmarking service, like del.ico.us. That page is the one that tells you the tags and how many people bookmarked it. Just click through to the original page...
- Euan
@Gregory, the final page is an article from a scientific journal. These are not usually free. Also, the article is not about genomes, "Genome Biology" is a journal title.
- Pawel Szczesny