I've seen in one of the topic that google+ is not in top 5 list, so does it come under top 10 traffic wise?
No, google is ranking social networks basid on age and content date. if for example a facebook page is older than a google+ page then the facebook page will display first. for example, when i google my name i get: Facebook #1, Myspace #2, google plus #3. Facebook and Myspace have been updated with more content than google plus. google plus will rank #1 for my name after i stop posting on facebook and start posting more on google+. Google would not want to rank over another site just because "they can". they want to display quality content infront of there users even if that means ranking there own sites under another.
I don't think Google+ is a social networking site alone but just a kind of application so it may not get listed on as one of social networking sites.
Honestly I like Facebook than G+ because I don't know how to use it lol Maybe it'll take time for me to familiarize G+ like what I did on Facebook.
According to the Wikipedia List of social networking websites, Google+ has 50 million registered users. That is still half as many as MySpace, and 1/16 as many as Facebook. So Google has a LOT of ground to make up. But I think Google+ is in the top ten, especially if you consider only English sites. However, it does seem to be especially popular with photographers. And the fact that so many people use Google's other services (i.e. - Gmail, Google Docs, etc.) means they have a huge base of users who are already using their services, meaning to sign up for Google+ is as simple as clicking a button. Plus, there was that controversy some time ago with Facebook security and privacy concerns. I think as long as Google plays it cool,and offers rock-solid service, they will be seen as a good alternative to Facebook; Facebook just has to slip up a couple more times and people will go over to Google+ in droves.
It stood 6th in the social media category After Facebook, Twitter, Linkedin, Myspace, Ning. if the number of unique monthly visitors are concerned it is much behind to all
considering its owned by google , it would be a good idea to use it for social networking if thats what you want to do to build up your website. Although it is new it is getting more and more popular thats for sure.
Google plus is really new and it takes time to become #5 in social networking websites. But I am sure that it will become #3 in future. For #1 and #2 I think other social giants are eligible enough like facebook, twitter.....
Google+ is still in its infancy so I would give a few more months to see it ranking in the top 5 of social networking sites