You can hire someone to do that for you but that would be a little more expensive than doing it yourself.
You can use some automatic programs that shares your articles in the social media websites. Like LinksAlpha.
Interacting with friends at the social networking sites is fun after all. Â Use of automatic programs indeed serves the purpose. Â Half the work would have been done. Â
Look on Fiverr or forums and outsource the work. You will be amazed how much work people do for a low price. Then you can spend your time on other things. Also you can split your time wisely. e.g. 1 day spend time writing all the posts you want to get out on the next day spend an hour or so posting them etc.
Outsourcing will save you tons of time and free your hands to do the more important tasks. Schedule your day and balance your workload!
Organize everything and try to break down a large project in to smaller and simpler tasks. In this way you should be able to keep a track of the time spent on each task. This will also help you in the future in giving correct estimations.