i want to know some information on Bangladeshi Jobsitesand their fuction..Its needed in study purpose for a friend of mine

Things I would like to know...

  • Structure of Bangladeshi Jobsites
  • Revenue Sources
  • How does they function?
  • Payment system
  • Cost
  • Competitive analysis among Bangladeshi Jobsites
  • Problems Faced by Jobsites

describe here (make it elaborate if necessary) , give me links of articles and other stuffz whatever you think can be helpful

its urgent, So make it quick if possible..

And Thanx in Advance