Steveorevo

Search bbPress extends WordPress’ native search to include bbPress post types allowing WordPress to automatically include bbPress content in results. Link adjustments are made to results to ensure users will be taken directly to replies, topics, and forums. This plugin also fixes the double quote typo in bbPress’ unified login widget.
Simply activate to add the power of search to your forum.
<a href="http://serverpress.com/" rel="nofollow ugc">A plugin from Stephen Carroll at ServerPress.com</a>
<ul>
<li>Want more? Check out themes, plugins, and everything *Press (WordPress, bbPress, BuddyPress) related at <a href="http://serverpress.com/" rel="nofollow ugc">ServerPress.com</a>.</li>
<li>Please support me by checking out my newest projects or visiting <a href="http://serverpress.com/membership-options" rel="nofollow ugc">here</a>.</li>
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<h3>Additional Info</h3>
Purpose: What good is a forum without search? Our plugin addresses this issue. You may already know that WordPress is an expert on taxonomy and already handles posts, tags, and parent-to-child page hierarchy beautifully. But search is missing on the front end; where it matters to your visitors. My Search bbPress plugin takes care of this and promotes forum participation with links that take them to the heart of their search terms. Have your bbPress implementation deliver search results that matter!

Search bbPress

This Plugin brings seamless, unified search results from bbPress 2.0 to WordPress and fixes the bbPress login widget in all languages.

master5o1

Users can maintain their own personal ignore user list which is used to hide any posts or topics from that user. 
While viewing a topic, the current user can ignore any of the reply authors by clicking an ‘Ignore User’ link under/near the author name. This adds the author to the user’s ignore list. 
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 <code>?show_ignored_users</code> applied to the url (a link to show all posts and topics is given when posts are hidden).
Users who can moderate the forum cannot be ignored by any members and members cannot ignore themselves.

bbPress Ignore User

Allow members of the forum to selectively have a user's posts and topics hidden from view.

Search bbPress vs bbPress Ignore User