Today we learned that by the end of this week PLoS ONE (in keeping with all other PLoS journals) will be indexed by the Web of Science – this is an important literature discovery tool that many people use and so we are pleased to be indexed. PLoS ONE is also indexed by a host of other services such as PubMed, MEDLINE, PubMed Central, Scopus, Google Scholar, the Chemical Abstracts Service (CAS), EMBASE, AGRICOLA, PsycINFO, Zoological Records, FSTA (Food Science and Technology Abstracts), GeoRef, and RefAware.