BuddyPress.org

Re #3 – if that record is deleted, they can sign up again using the exact same info. That record tho, is never displayed anywhere else.

Really, the mass deletion of spammers shoudl be handled on the WordPress end, as ultimately that’s the menu your’re using.

Without going and checking, I *think* you can sort the blogs/users so the spammers are all on one page, select all and delete all in one go.

For more than a screenful, I do it with a SQL command right in the database.