Duplicate content is poison for any blog and you are involved with this case so google penelity for your blog and makes your blogger life simple to hard. Your blog can either be removed from the search engine or your ranking can be dropped for all your targeted keywords.
If you accept or allow guest post for other blogs then it is your responsibility to check content quality whether it written by professional or not.But Most of us don’t know about How to check duplicate content or articles for blog.So I decided to give a post Which Tells bloggers About 4 Mashable ways to check Duplicate content in SERP.So Read below steps carefully—
One of my Best, reliable and accurate tool is Copyscape, which provides me the ability to search published and unpublished articles against duplicate content issue. The tool will search all pdf files, internet websites, blogs, forums etc and find the locations with links from where a article is copied.
The tool is free, but in free package you can only search already published articles through its link. If you want to check a unpublished article then you need to buy credits. 1 credit is charged for checking a article having maximum 2000 words. You can buy 200 credits for just $10 ($.05 per credit).
If you deal with high volume of content then you can get premium IP to integrate the tool in your CMS and search all the articles inside your blogging platform.
this tool allows you to paste a article having maximum 25,000 characters. It is one of the best alternative of copyscape tool having advance features. Get email alerts when your article is copied, work with yahoo, bing and google indexer.
They also offer premium membership where you can buy 60,000 characters for just $1 (around 12 searches) and 1000,000 characters for just $10 (around 220 searches).
This tool has 3 option that allows you to detect duplicate content issue. You can search the whole text, or URL of a article or you can upload a .txt, .doc, .rtf etc files. More then 190 languages are supported by the tool and the accuracy of the result is sure.
Another free tool where you can check unpublished articles for free is duplichecker. You can either paste the article or upload the .txt file to let the tool search the article and find out if it is copied or a unique one. It can use Google, Yahoo and MSN indexer to search the duplication on internet. However the recommended indexer is Google.com