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For example, if you write original articles on "widgets", you could contact the top five websites who have content about "widgets" and offer your articles for publication on their sites. You could then specify that they must link back to your site, include a bio of you and mention the benefits that your site offers. For example "This article was written by jetteroheller, who runs the jetteroheller.com website about widgets. jetteroheller has x years experience in this field and jetteroheller.com offers reviews, articles and other original content about your favourite widgets. Visit jetteroheller.com."
One stumbling block here is that these top 5 websites may not want to simply reproduce content that is on other sites so you could maybe think about giving them a one month exclusive (although you would only be able to put your content on one site).
I've started to do this with my creative writing website. I write some original features for my site, give them to another writing site which is way more popular than mine for a month or so. I then publish them on my website. These features are not the main attraction of my site (I have articles, tips and a forum) so I don't mind giving them away. It's too early to judge results yet, but I reckon it could boost my visitor number and therefore my Adsense revenue.