The "Direct Session" dimension, not to be confused with the default channel grouping or source dimension, is something different. It can tell you if a session was genuinely from its reported campaign (reported as No), or if it was simply bucketed there due to the last non-direct click attribution model (reported as Yes). I didn't mention this dimension in the article because it has some flaws which can cause brain bending complexities, plus it goes a little beyond the scope of this article, which I tried to gear more towards marketers and non-expert GA users. It's certainly an interesting one, though.
Putting it simple, duplicate content is content that appears on the world wide web in more than one place. Is this such a big problem for the readers? Maybe not. But it is a very big problem for you if you are having duplicate content (internally or externally) as the search engines don’t know which version of the content is the original one and which one they should be ranking.
Let’s say that you are selling dog food. And most likely you will want the best traffic possible on the keyword “dog food”. Creating/building/earning all of your links with the same anchor text will get you in trouble. If you are having 600 links from which 400 use the anchor “dog food”, you might be facing a problem; it will surely raise a red flag to the search engines. And we all know what search engines do when they are getting these kinds of alarms: they begin applying penalties and move your websites so far from reach of the user that you will not be even listed in top 100.
The top five leaders in paid traffic (Google Adwords) are the same companies that lead in search, with Amazon again on top. Leading retailers don’t want to put all their eggs in one basket, and they are willing to invest heavily in pay-per-click campaigns. Clearly, PPC has worked for them because we see four out of the top five spenders are the leaders in annual sales numbers.
This is the number of views that you can test each month on your website.It's up to you how you choose to use them, either by allocating all the views to one test or to multiple test, either on one page or on multiple pages. If you have selected the 10.000 tested views plan and you run an experiment on your category page which is viewed 7000 times per month, then at the end of the month 7000 is what you'll be counted as tested views quota.