Moderators don't like seeing a whole horde of flags in their precious flag queue. They dislike this even more when all the flags are from one user who is obviously running a search or query and flagging everything.
However, this bad content shouldn't be ignored.
This app (if it ends up actually existing) will allow you to 'queue up' flags, for dispensing at a sane pace. The flags will come from your account, not mine. This does mean I (or whoever hosts this) would theoretically be able to perform actions on your behalf. Weigh those risks... or just host it yourself.
Also, to combat the effects of something happening to a post that would make your previously valid flag invalid, we'll check the last activity date on the post.
Available at http://wildfire.erwaysoftware.com, but accounts currently require manual authorization before they become active.
Anything with a semi-modern browser. IE folks: no guarantees.
I made this.
Get everything on GitHub, it's written on RoR.