Google search will show you results not only from the web but also from data on your Google+. This means that you will see on the search results posts that were shared with you on Google+, people you follow and profiles. There are three new features that Google merged to its search algorithm. First of all, you will be able to see personal results. This will enable you to find Google+ photos and posts you shared or people shared specifically with you. They are called personal results because only you will be able to see the results. Secondly, you will be able to see Google+ profiles in search results and also in auto-complete mode. This allows you to find people you want or interested in following very fast. Finally, search results will show people and pages (on Google+) of a specific topic or area of interest. You can see the profiles or follow people from results after a few clicks.
Many might think that this will help Google users to find better results but in my opinion this is not the case. This will force people to create profiles and pages on Google+ to promote their business and products by appearing on people’s personal results. This is a move from Google to get more users to its social network and as a result get more profit from it. This move changes dramatically the SEO of websites and companies and organizations should use Google+ as a tool. It also make it difficult to check your place in search results because each one of us will see different results depending on our social network activity.
Source: [Google Blog]
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