Unlike other Google Products, Google Plus is facing an incline in the unique number of visitors per day. As already pointed out in the News section of Brothersoft :
Facebook and Twitter both had record numbers of unique visitors in the month of July, according to comScore. Facebook had 162 million unique visitors in July up from 160.8 million in June and 157.2 million in May. Twitter also had a record month for unique visitors with 32.8 million unique visitors, an upgrade from 30.6 million in June and 27 million in May. Google Plus, wasn’t listed separately by ComScore.
What Google Trends is saying about the traffic trend for Google Plus?
It was possibly expected by many, that Google Plus will be able to keep the number of Visitors steady, if not able to increase . While, there were various illustrated animated Gif image posts on Google Plus “showing FaceBook is going to die” : typically a person or an animal with an FaceBook logo head and another with Google Plus logo head illustrating a clean defeat of FaceBook.
Google Trends Shows the Trend for plus.google.com domain :
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As Google Plus is a sub-domain of Google, unless Google Plus officially publishes any data, it is not possible to get the exact analytic information.
Why Google Plus is losing traffic while FaceBook, Twitter experiences an increase?
From personal experience of reading others’ opinion in different kinds of blogs and forums (including some non-public, coveted forums) about Google Plus, it appears that :
- Google Plus users are not happy, particularly with the “so much personal detail” Google Plus is asking from the users.
- Relatively strict strategy of Google Plus : “one person, real person and one and only profile”.
- Google Plus Profiles are getting flooded with bigger images and videos, which is wasting the bandwidth for the users who has cap on bandwidth or have slower connection.

Yeah even I think its going down these days. Even after it went public, I dont see much of my friends on Google+ and Facebook is building very fast. I also came across a really good infographic about Google+ falling down here # url removed