well, ive been using spun articles in one of my sites.. and doing churn and burn using gsa it works well for me.. but the site really looks real.. with social media accounts and youtube channel.. its a auto rss -> spun article =) so works well =) earning about 1-10$ a month from it... just leaving it alone..
If you create a manual SPINTAX with 5-10 Variations of each word, not even Einstein would be able to tell whether article was SPUN or not.
While spinning your article you need to take care of grammatical issues and avoid every single AUTO-SPINTAX Softwares which produce just JUNK. This JUNK content is perfect for indexing your TIER2 and TIER3 Links.
If you want to get your 100 Articles ranking on multiple Blog sites then you need to go with MANUAL SPINTAX