We provide all Twitter users with the ability to block other users. Blocking prevents a user from following you, sending you an @reply or @mention, or putting your account on any of their lists.
To block a Twitter user:
Blocked users can't:
Please note: that if your account is public (i.e., not protected), your Tweets will still be visible on your public profile page.
We do not notify a user when you block them, but because they will no longer be able to follow you, they may notice that they've been blocked.
If you change your mind, you can easily unblock a person by clicking undo from the blocked user's profile page:
In addition to blocking other users, you can also unfollow other users, or report other accounts as spam. Please see those help pages for more information on each of those functions.
Our Troubleshooting pages for Following issues have answers to common problems.