LinkedIn Twittering Blogging

In an attempt to keep somewhat up to date with business and social networks I have been developed my http://www.linkedin.com/in/keithrobertsjeffrey profile (to some degree of success) as well as Twittering (click link to the right) when I can think of something to tweet! The blog has therefore been neglected. All this stuff could become a full time job which kind of defeats the object?