I use Shetoldme for create do-follow backlinks to my blog. It requires add little post content, if i add my articles real content then Google consider it as a duplicate content? So its better if i use different title and content on social bookmarking site?
Hi I'm the webmaster of shetoldme and I advise simply not use my site, focus on your own web properties, it's always better for your benefits. But if you want an answer, then yes it is better to change the title and description a little, so that the page on the social bookmarking site has a small chance of bringing you some traffic. Honestly I wouldn't bother if I were you, look at me, do I use any social bookmarking service or adsense revenue sharing site other than my own? NO. So don't believe anything that is written on my site's pages, of course it is written to attract new members, but in reality, is it worth the effort? I don't think so.
No don't use a different title, make sure the title remains the same but just don't add the whole content of the article. You are right, Google would consider it duplicate content just make sure that you add just a snippet of instead of the real thing.
The title should be added to the site and there is no need to change the title as you would want the same title to show up in the search results that you have used. The content that you will use will in no way count as duplicate content as the content is yours.