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While reading the page on the emacswiki: http://www.emacswiki.org/emacs/BbdbExporters I saw your comment saying: "I’ve ported this module to BBDB 3. – JohnWiegley" Keeping to the adage that no good deed shall go unpunished, I installed it in my spanking new arch linux system. However it crashed when I tried to use it. The latest bbdb which I installed via melpa (Version: 20131116.930) seems to have changed the name of the function bbdb-record-note to bbdb-record-xfield. Here is the diff that got it to work once again:
< (notes (bbdb-record-xfield record 'note))
> (notes (bbdb-record-note record 'note))
< (categories (bbdb-record-xfield record 'category)))
> (categories (bbdb-record-note record 'category)))
It is easily achieved by doing a query-replace bbdb-record-note -> bbdb-record-xfield
I hope this is helpful.