Of course, that potentially means that 250,000 user accounts were also compromised on Facebook, Pinterest, Instagram, GMail, Yahoo Mail, Hotmail, et al. If you aren't using a different password for every service or are using only a derivative of a master password (eg. hunter2@twitter, hunter2@gmail, etc), CHANGE YOUR PASSWORD on all services using the same email address (or derivatives) as your Twitter account. Setup 1Password.