Pragma statements in sqlite? http://www2.sqlite.org/pragma.html
 - synchronous - enable for writing, maybe not important for reading
 - locking_mode - can't do for reading, writing yes
   - disable all locking for reading maybe
 - cache_size 

fix the conversion so can be achieved with text -> text instead of
db -> text

==== 3/14/2010

PEP-8 noncompliance, e.g. screedDB should be ScreedDB, although
I kind of agree that screedDB is prettier.

accuracy => quality
get pairs via a standard api, with/without enforcement
