According to our data, twenty-three out of the twenty-five largest retailers use Product Listing Ads (PLAs), which are cost-per-click ads that are purchased through AdWords to promote products. Google initially launched Product Listing Ads in the US market in 2011. However, the advertising format experienced an astronomical rise around 2014, when the search engine launched the feature in other countries. Today, PLAs account for 43 percent of all retail ad clicks and a staggering 70 percent of non-branded clicks!
There’s also other search engines. Ask, Dogpile, IxQuick, and so forth; these are all minor. However, one search engine seems to be gaining market share and exposure, and that’s DuckDuckGo. It has been trending in the wake of Google privacy concerns and some clever marketing from the DDG staff. It’s something you should, at least, pay some attention to.
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.