Article indexed but not displayed in SERP

Selected answers from the Dumb SEO Questions Facebook & G+ community.

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  david maxx: Google SERP Issue: Article indexed but not display in SERP...?
  
  Hi Everybody.
  
  Myself +david maxx ; i have some issue about indexing articles...
  
  I am running a blog since 3 years and getting good result in Google but last 20 days i have published 10+ articles, each and every article indexed by google but didn't show article in serp result, even i searched article's title using exact match...
  
  Example: "15+ Free Responsive Magento Themes For eCommerce Store"
  
  But didn't see my webpage url.. Instead of this google showing third party url where i have shared my article for promotion purpose...
  
  Does my blog penalize by google or something else?.. please give your feedback... i have checked google webmaster tools but didn't find any massage regarding penalties...
  
  Here is my blog: ; http://blogs.perceptionsystem.com/
  
  Need your help to find the solution....
  
  waiting for positive response..
  
  THanks & Regards
  David ; Max
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  ?ukasz Rogala: Can you provide more info about the current traffic on your website? Was there any changes/spikes in last 2 years? When I look at your visibility in Searchmetrics it looks like something wrong is going out there (some Panda related issues).
  
  While doing a simple site:blogs.perceptionsystem.com search in Google I've noticed that a lot of pages went into the suplemental index which means that you should think about what and why are you indexing.
  
  Thing is about categories and tags mostly - it's not bad idea to have them but keep it as a support for your internal linking efforts instead of traffic building.
  
  If your traffic went down in last 2 years I think you can make a simple advanced segment in Google Analytics to check how many traffic brings /tag/ and so on. If not too much - lets make your index narrower - by setting up noindex, follow on tags and some categories.
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  david maxx: Hi +Łukasz Rogala
  Now days My blog traffic going to increase more and more.....
  There was not found any message from Google Webmasters about any penalty... I'm confused now about my blog issue ; ): what should i do?