this is why i stated this idea, since YaBB has it's limits (we've broken what, all of them?)
my way of going about this. we can reduce posts by laying out the following plan.
The volunteer users (by select choice)
--Mark posts in each forum delegated to be moved. this can be done by a simple reply. when they reply's are made, they move to the top of the forum, and lead to part two.
the moderators
--begin a relocation process of each marked thread, after second review of relevance. also being deletion of closed/locked/moved threads
the admin
--finish off any leftover posts not deemed relevant by deleting the forum, and renaming the forum that the relocated posts moved to.
It's a relatively simple process. however since i'm unfamiliar with what goes on behind the scenes, i may be omitting information. i believe this is a good formula that will produce results that are the same as deleting the pictures over a year old.

ramos