I really like your plugin, works well.I have a big site and have a lot of 404 errors from deleted posts and tags around 40k.This plugin is what I am looking for.I am not developer but I have a few questions about the plugin and hope you will help.
1. does this plugin modify the .htcaccess file? for all urls that have been 301'd? I am worried that with the amount of 404's i have it would create a large file and slow my site.
2. On the settings page i notice it logs all the URL's , where is this information stored? could it slow my site if their are a lot of them?
3. would you ever consider making a change to plugin to have a option not to list the old URL's? so user could decided not to list them if they want.