Build a Website for crowd sourcing opinion of different stocks

Build a website like "estimize" "vetr" "stocktwits" I need good builders to work here. Visit those websites and list out important functionalities (look is not factor, unique in functionalities,graph/table/data based and predictive;more description/functions below from my view).This website for opinion sourcing from people. Here opinions are like: expected profit of any company ...etc Example only: "I wish to source opinion of year end growth of TCS( just example for understanding)". Partcipants are mostly stock market investors, analysts ... so they have idea but do not know the exact value. They log in and express their opinion ultimately they are also benefited to get the poll, rank, prizes etc if the opinion matches with declared result by Company. 1. Domain purchansed 2. Hosting purchased I need you to develop a complete chain of functionalities not the total website at this price.