I've made a local news website that receives about 1,500 visitors per day. As it is, the only revenue I'm generating is from a monthly contract I've got to display a local business' banner above my content. What types of advertising are likely to generate the most income? New content is posted daily, and many of my visitors are repeat viewers, who check the site regularly for updates. The vast majority are residents of the city the site covers. Any ideas appreciated.