First: @PinkoOutrageMachine has some great posts. I’d reconsider ignoring her.
The ignore function is a very old plugin for the board engine, not updated for over 2 years. It will only work in areas under the FORUM menu, not the home page. The home page is completely custom built and does not necessarily function the same way the Forum pages do. I may make an ignore feature someday. I did google the ignore plugin and found this:
On the user’s profile, the author can remove entries to their ignore list.
The user can forcibly show all ignored posts or topics by viewing the topic or forum with
?show_ignored_users applied to the url (a link to show all posts and topics is given when posts are hidden).