It looks like op is looking for a community manager based on his description. He needs someone to manage his project community on Twitter so it can increase the social media activities which is cool. We have some good bounty managers here that can do the work but the pay looks too small for them to accept since it's just $100 per week.

Maybe op can give a little description of what the job of the manager would be, so those would are interested can kindly zoom in knowing what there duty entails. If the description of job is known that would reduce the urge of acquiring about what the job of the manager would be.