Startup Idea : College Listing

As a college student, I frequently find myself broke and browsing through Craigslist for odd jobs or trying to sell miscellaneous items for a quick buck. Craigslst is unfortunately filled with a whole lot of spam and a whole lot of searching. College Listing would be a monitored and moderated app/website with no spam and no BS. With College Listings you could find jobs and ads posted specifically by college students in your area, as it would require a profile and a .edu email. The profile would also allow for some sort of rating system to ensure that you aren't walking into the last deal of your life with the next up and coming Craigslist killer. I have no idea how to go about putting this plan into actio but it needs to happen, so someone please help me get this idea rolling!