I was affected by this. I received the email notification from Maciej and was offered compensation for the mistake. I declined the compensation and instead upgraded my account to include archival service. I did this partially because I've been considering the upgrade for a while, but mainly because I was so impressed by the way the incident was handled.

Keep in mind that I don't have state secrets bookmarked in Pinboard. I'm just an anti-social type of user as their tag line notes and I appreciate how Maciej runs his business.