If you have the same article posted on several blogs, does this run the risk of any penalty for replicated content? There are a few people offering this type of service on the forums - is it a good or bad idea in terms of seo? Has anybody used these services and had good or bad experiences?
I believe that an establised blog can get away with a few duplicate entries, but having links from a whole bunch of blogs with all the same content will only increase your link count and offer little SEO value.
If you are talking about people posting the same article about one of your sites with links on many multiple blogs then duplicate content would not effect you anyways.
I think if your blog is reputable as seen through seo and links then your site will be given the benefit of a doubt. Answers.com uses wikipedia entries word for word, but the pages are not supplemental results and are indexed. This is just me guessing.
I think you might have a misconception of how duplicate content works. If it is all on your site, only one page will show - the one Google deems original. If it is published on many sites, then only one will show and it will be the one that Google gives the highest score to.
But what if you have different articles (with links to your site) published on multiple blogs which publish a lot of the same articles ? By having duplicate content from other articles (published on multiple blogs) appearing on the blog where your unique article appears, does that then negate the linking benefit you get from your original articles ?
If all the blogs link back to your original article Google will understand that you're the source, so you'll get some credit for those links if they come from reputable sites.
G is so clever i think it will find the same article on different blogs and it will filter it because of dublicate content
but this article is unique it won't appear on any other blogs and it won't appear on the main site (where the embedded links point) My question is, will these links within the unique article/blog posting be downgraded because they appear on a page which features other content which is duplicate content (other articles which are not unique) ?
One of the good thing that these networks of blog are giving was they will increase your link popularity. i.e. they are all technorati listed. They will give you increase in Technorati rankings.