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Twitter is a service for friends, family, and co–workers to communicate and stay connected through the exchange of quick, frequent messages. People write short updates, often called "Tweets" of 140 characters or fewer. These messages are posted to your profile, sent to your followers, and are searchable on Twitter search.
All you need to use Twitter is an internet connection or a mobile phone. Join us here! Once you're in, begin finding and following accounts whose Tweets interest you. We'll recommend great accounts once you're signed up.
A Tweet is any message posted to Twitter, and all are 140 characters or less. Once you've signed up, just type your first Tweet in the update box (shown below). We'll even count the characters for you! Click the Tweet button to post the update to your profile. If you'd like to learn more about how to tweet, please read this article.
We like to keep it short and sweet! It also just so happens that 140 characters is the perfect length for sending status updates via text message. The standard text message length in most places is 160 characters per message. We reserve 20 characters for people's names, and the other 140 are all yours!
After you click the 'Follow' button on someone's profile, you're following them. See a list of people you're following by clicking on the following link on your profile page or on your home page's sidebar.
Twitter sends you an email when someone new follows you. Set up your email preferences to notify you when you have a new follower. The 'Followers' link on your profile page or home page's sidebar will also tell you who is following you.
Twitter has follow and update limits for stability and abuse control. You can read more about this here.
Your followers read your Tweets. If your Tweets are public, anyone who runs a search for a keyword in your Tweet may be able to see that message. Your Tweets are public by default; if you're hesitant to have people you may not know read your updates, protect your Tweets to approve followers and keep your updates out of search.
Yes, you can. If you block someone, they won't be able to follow you or send you any messages. Read more here.
Read our article about how to post a Tweet. You can tweet from twitter.com, from your phone, or from an application.
If a message begins with @username, meaning it was directed to another user, it is an @reply. Click the Reply button on another person's Tweet to reply to it. Please note that if your Tweets are protected, users who are not following you will not see your @replies or mentions. Read more here.
Direct messages are personal messages sent from one Twitter account to another; they do not appear in public for anyone else to read. You can only send a direct message to a person who follows you. Read more here.
An @reply is a public message sent regardless of follow-ship. Anyone can view it (if your Tweets are public). A direct message can only be sent by someone you follow, and can only be seen by the sender and intended recipient.
No. Once a Tweet has been posted, it can't be changed. You can delete an Tweet by clicking the trash icon on the right end of it.
We store all your Tweets. You can click the Me tab to view up to 3200 of your most recent Tweets in your profile timeline. To view more, you can download your Twitter Archive and browse a snapshot of your Twitter information, starting with your first Tweet.
Uploading and sharing images on Twitter.com is easy! You can find step-by-step instructions and more FAQ here.
Yes, complete with documentation and an active developer group to help you with common API questions. Find our more at dev.twitter.com
Get more information here on what API access you may need, and how to request whitelisting.
No. We escape all HTML for security purposes. If you paste in a link that is less than 30 characters, we'll post it in its entirety. If it's longer than 30 characters, we'll convert it to a shorter URL.
We have a whole article about how to report spam on Twitter. Please read it. We encourage you to always block any spammers you find.
Accounts are suspended for Terms of Service violations or spam investigation. Read more about this here.
Review our Terms of Service section to find out what constitutes a violation, and how to go about fixing a related problem.
Try using the search box in the blue bar at the top of this page, or browse our Help Center.
Check out our troubleshooting section for solutions to common problems.