You have to maintain 1 facebook fan page, 1 twitter page. For facebook you have to increase fan specific country and for twitter you have to increase followers from specific country.
Sometimes you do social bookmarking. And some simple task if required.
You must know how to create, design , maintain facebook fan page, twitter page.
Some experience will get priority.
My budget is $30 for every month.
This job will be continued for several months.