Lurkers are probably anywhere between 8-12:1. People actually posting stuff on the internet are in the vast, vast minority, creates a sort of echo chamber.
I am technically "logged into" twitter so I can click through and read the postage stamp-sized charts linked to through various articles and blogs, or watch a video about a riot in some far flung part of the planet. Once a year I tweet at airlines when they lose my luggage or whatever but otherwise don't tweet. Twitter isn't a good social media service, it just happens to be the image/video sharing platform of choice for journalists to promote themselves.
I am technically "logged into" twitter so I can click through and read the postage stamp-sized charts linked to through various articles and blogs, or watch a video about a riot in some far flung part of the planet. Once a year I tweet at airlines when they lose my luggage or whatever but otherwise don't tweet. Twitter isn't a good social media service, it just happens to be the image/video sharing platform of choice for journalists to promote themselves.