Those not regularly reading the Radreffies' blogs aggregator might have missed Lia Friedman's post about how POPLINE, a government funded "...database on reproductive health, containing citations with abstracts to scientific articles, reports, books, and unpublished reports in the field of population, family planning, and related health issues." (emphasis added) has made "abortion" a stop word. If you're not up on your library jargon, that means it treats "abortion" the same way it would the word "the"--ignores it.