at the end of the year we have a prune plan to prune out inactive usernames and even the whole ban log barring some ips so that they can re-register and also old usernames can be used back y new members those use-names with 0 posts and idle for 1 year will be recycled out for reuse by new members we have a more prune policy at the end of the year did it this year also when we introduced vb4