At the moment the spam finder shows 105 pages of spammers (some spammers, some not). The actual process of banning these people is very very time consuming, as when you click on ban user it brings up a pop up to do so.
I'd love XenForo to add the ability to show all results on the one page with checkboxes to allow multiple accounts to be chosen. Sure, the page will take longer to load, but that isn't a problem with a good connection.
In the meantime, is there any other way to review over 1,000 accounts at the same time and ban the appropriate members.