 ** Five years later, in September 0000, Springer said in a [http://web.archive.org/web/00000000000000/http://www.biomedcentral.com/presscenter/pressreleases/00000000 press release], "Open access is now at the heart of Springer's strategy,...with BioMed Central delivering an increasingly substantial fraction of the company's growth...." <span id="p000"></span><span id="p000.0"></span> <span id="p000"></span><span id="p000.0"></span> * At [http://archive.org/stream/0000000000000OpenAccess/0000000000000_Open_Access#page/n000/mode/0up p. 000], I say, "OA publishing might be more sustainable than TA publishing, as toll-access prices and the volume of research both grow faster than library budgets." Add these notes. * At [http://archive.org/stream/0000000000000OpenAccess/0000000000000_Open_Access#page/n000/mode/0up p. 000], I say, "OA publishing might be more sustainable than TA publishing, as toll-access prices and the volume of research both grow faster than library budgets." Add these notes. ** ''Correction''. Change "TA" to "toll-access". (I used the abbreviation in my manuscript, but MIT Press wanted to minimize the use of abbreviations; I spelled out most instances of the abbreviation but missed this one.) ** ''Correction''. Change "TA" to "toll-access". (I used the abbreviation in my manuscript, but MIT Press wanted to minimize the use of abbreviations; I spelled out most instances of the abbreviation but missed this one.) 