If you have any duplicate content you will probably not even get ranked in Google. If you're not ranked in Google there is very little chance you will be able to make money as about 75% of web traffic comes from that search engine.
Best Answer - Update you blog/s regularly and make sure that the title and url of your posts contain keywords that people are actually searching for It can take a while to get indexed by search engines but once you do they like blogs which are regularly updated with fresh, good quality unique content. Get backlinks. Make useful and interesting comments on other related blogs and include a link back to your blog. Hope you good luck