Last modified: 2010-05-15 15:41:05 UTC
On Special:Blockip kindly say that all you do is block the offender
from editing articles.
That way it won't come as a shock that the offender is still enjoying
one's site to his heart's content according to a quick glance at one's
apache logs, despite being "blocked".
The page says "block write access"; not 'block all access'.
Seems fairly clear to me.