Block Disposable Email Addresses on Registration
Rejects registrations from throwaway email services, which are a common source of fake and spam accounts.
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.
BuddyPress: Limit the Length of Activity Updates
Shortens activity updates and comments longer than a set number of characters, which keeps the stream readable and discourages wall-of-text spam.
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.
BuddyPress: Strip Links From New Members' Activity Updates
Turns links into plain text in activity updates posted by members who joined recently, which takes the reward out of spam sign-ups.
Limit Sign-Ups per IP Address
Allows only a few new accounts per IP address per day, which stops bots and people from creating piles of accounts.
Record and Show the Registration IP Address
Saves the IP address each new account was created from and shows it in the Users list, which helps spot bulk fake sign-ups.
bbPress: Block Links in Posts From New Members
Stops members who joined in the last few days from posting links in forum topics and replies, with a clear message explaining why.
bbPress: Hold Posts From New Members for Moderation
Puts topics and replies from members who joined recently, or who have few approved posts, into the pending queue until a moderator approves them.
bbPress: Limit New Topics per Member per Day
Caps how many new topics a member can start in 24 hours, which stops spammers and over-eager posters from flooding the forums.
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.
bbPress: Stop Replies to Old, Inactive Topics
Hides the reply form on topics with no activity for a set number of days and shows a note instead, which prevents necro-posting and old-thread spam.
bbPress: Stop Search Engines Indexing Forum Profiles
Adds noindex to bbPress user profile pages, which are thin, duplicate content and a common target for spam sign-ups trying to get links indexed.