Forum OpenACS Q&A: Re: Updated technical answer for "the PHP Question" Requested

http://www.databasejournal.com/features/postgresql/article.php/3288951  evaluates MySQL v PostgreSQL

http://www.redhat.com/docs/manuals/database/ may be helpful to those seeking to illustrate commercial support for PostgreSQL

http://panoptic.com/wiki/aolserver/43 lists sites using AOLServer, including several major AOL services.  It should be edited to reflect OACS/.LRN users (any volunteers?)