Twitter stakes are distributed at the end of the whole bounty campaign. Stakes which are distributed on a weekly basis are signature campaign stakes.
I don't think it's a good idea to count stakes at the end of the campaign. It can happen that some tweets will be lost in archive. Maybe it's better if we report our tweets in the thread or somewhere else, so that you can keep track of them.
I am going to run into this issue as well.
Currently at the end of a bounty right now where they counted at the end. WW4 has broken out. Just a heads up that bounty hunters are going to bounty hunt which means they tweet 2k + easily, don't check the thread until the end, find out most of their work did not count, blame HomeToken and the manager, Witch hunt pursues where they turn twitter against you.