For anyone who has quipped that they are hooked on social networks like Facebook and Twitter the latest research suggests it might be no joke.
The statistics are mind-boggling.
Those two networks alone boast well over a billion users between them. Every day, there more than half a billion 'likes' on Facebook and 350-million Twitter tweets.
It is perhaps no surprise then, that researchers from the University of Chicago found last year that social networking can be more addictive than nicotine and alcohol.