Marketing and marketing and marketing

90% of reaching my readership is marketing. I learnt the hard way when I published with Macmillan many years ago.  They did very little marketing.In fact what they did was pathetic.  So as an author you have to do your own. I have found todate that social networking is a useful tool not only for getting known out there in cyber space but for making new friends. So I'm trying to contact potential readers using twitter and facebook.