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user_id=469548

On the pydotorg database with all SF issues imported:

SELECT count(*) FROM __words WHERE _word IN ('A', 'AND',
'ARE', 'AS', 'AT', 'BE', 'BUT', 'BY', 'FOR', 'IF', 'IN',
'INTO', 'IS', 'IT', 'NO', 'NOT', 'OF', 'ON', 'OR', 'SUCH',
'THAT', 'THE', 'THEIR', 'THEN', 'THERE', 'THESE', 'THEY',
'THIS', 'TO', 'WAS', 'WILL', 'WITH')

gets me

 count
--------
 222001
(1 row)

So this would eliminate about 10% of the __words table. Nice!