I saw this website: www.recruiting.com. It is a PR7 blognetwork which takes feeds from its members and posts on the site. IT has permalinks pointing to the source and first 3-4 lines of the article. It seems it is drupal based(i saw it from the page source). So my question is: won't it be seen as a duplicate website because it 3-4 lines of each post are similar to the source?? Thanks.
Syndicated content is considered duplicate. But it should be okay if only 3-4 lines out of 15-20 are same as the original source.
In the search engine' view "duplicated content" is content that repeats and it's unimportant 3-4 lines or 3-4 pages. But namely "duplicated" will be content on site that has lower PR. So any high-rated site may steal your content without problems and even with benefit