What is Twitter's inactive username policy?
We encourage users to actively log in and use Twitter when they register an account. To keep your account active, be sure to log in and Tweet (i.e., post an update) within 6 months of your last update. Accounts may be permanently removed due to prolonged inactivity. Please use your account once you sign up!
How does Twitter determine inactivity?
Inactivity is based on a combination of tweeting, logging in, and the date an account was created. Please note that you may not be able to tell whether an account is currently inactive, as not all signs of account activity are publicly visible.
What if a potentially inactive account is using my registered trademark as its username or account name?
If your trademark is being used on an account that appears to be inactive, please see Twitter's trademark policy for additional information. If you need to submit a report, be sure to provide all of the trademark registration information outlined in our trademark policy.
What if I have a request for a username from an account that looks inactive, but I don't have a registered trademark?
We do not accept requests for usernames that seem inactive. If a username you would like is being used by an account that seems inactive, you should consider selecting an available variation for your use on Twitter. In general, adding numbers, underscores, or abbreviations can help you come up with a great available username.