Yes, there is definitely is the relation between Google+ and page rank. So, you should have a profile just in case. Plus Google plus is very nice and simple to use.
I think Google plus ranking are like fan rankings. They may index the pages with more google pluses and bring them to higher ranks in search results. what do you think?
I am finding that when I log in over the last week the results I'm getting are all wrong, probably because my + circle relates to the other side of the equation in my business. I log out or go to a different device and the results are fine.
I think G+ does have a small factor in ranking but you can't just rank on G+ alone unless well, you have a literal no competition keyword...
PR is good but it wont make money for you. You can make money with even 0 PR site by doing its proper promotion. Well if you want to gain only PR then G+ is good way.
Review Page rank Algorithm. there is no any formula related to G+ for page rank benefits. Page rank is different thing and G+ is different thing.
I dont think so hitting the google plus button would increase your page rank. The PR is related to the number, quality and type of incoming and outgoing links, I think.
I havent tried to optimize a website through google + , but this information I would try to optimize it
Place a +1 button for your website to like in a good place of your site. This is a very good way to increase your search ranking.
Not its not true. however page rank and google + are owned by one person or organisation . but to increase pr there is only one rule from everyone and that is your backlinks and content . if you have backlinks from good quality websites your page rank will increase definately but if you only share your website on google + its not going to put much effect
Remember Google was taken to court on accustaions that they were favoring their own sites in SE results? And if you had two sites won't you like to help your one site through the other one? They are competing against Facebook likes and honestly they need everything they can get to come at par with them. they never will though.
may be it is not better for page rank but it improves page ranking in search result & better page ranking = visitors & page views.
If anything, +1's give you a better advantage to be seen with people logged into their Google account. Especially if others in your circles have +1'd it already. I see that all the time with my site.