It means you are no longer logged in to your account and no longer able to post tweets etc. You should always sign out if you are using a shared or public computer/laptop so that nobody else can post on your account/get your details.
@aamir_khan
There is no way of knowing this.
Follow the related link to the Twitter Help Center Android FAQ which explains the signing out process.
Twitter doesn't ask for your age while signing up but its privacy policy states that you need to be at least 13 years old to have Twitter.
On Twitters Sign Up Page they state that by signing up you confirm that you don't need to be a certain age ! So have fun !
One can follow Clearly Contacts on Twitter by first signing up for a Twitter account if one does not already have one. Second, search Clearly Contacts on twitter and accept to follow after logging in.
Question & Answers
You can subscribe to any unprotected Twitter feeds at http://twitter.com/statuses/user_timeline/username.rss where username is the username of the user who's tweets you wish to subscribe to.
Try logging in with that email address.
By clicking on it.
#LRT Means "Last Retweet" on twitter.