BuddyPress: Mark Activity With Blocked Words as Spam
Automatically marks activity updates and comments that contain words from your blocklist as spam, so they never appear in the stream.
Snippet Library
Users snippets for WordPress
Snippets for user accounts, roles and profiles: extra profile fields, new columns in the users list, last-login tracking and tighter control of what each role can do. Handy for membership sites, client sites and teams with many authors.
bbPress: Reject Posts With Blocked Words
Refuses forum topics and replies that contain words or phrases from your blocklist, showing the member a polite error instead of publishing them.