Usually I use tag scripting to quickly disapprove the bulk of posts I don't like before actually going through the mod queue. That way I can quickly sort out the posts where I can already tell from a small thumbnail that I won't like them without having to use the blacklist on the modqueue (where I use larger thumbnails) and potentially skipping a post I want to approve despite it including something I usually don't like.
This time I somehow managed to use the wrong tag script so I ended up mass-approving about 500 posts. Since these were the posts I sorted out first and would not approve I decided to flag them all.
If you're a user whose post I approved and flagged, sorry for the disappointment. It doesn't necessarily mean I think your posts are bad, just that I don't like it enough that I would approve it.
If you're an approver, sorry for making your queue a mess. You can put -(approver:Nameless_Contributor status:flagged) in the search field to exclude these posts.