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There are several good sites, but it's up to you to choose, depending on the genre you want to write about.
There are plenty of resources for finding blogging jobs; but knowing the real stuff from the fluff is difficult. Serach online for job boards of forums of some of the top blogs.Here are some of the sites which you can go through:http://jobs.problogger.net/http://www.bloggerjobs.biz/http://www.bloggingpro.com/jobs/
Hope this helps in getting a head start.