Google+ have a limited friend number of 5000 friends in your circle,but their is some thricks to bypass this limit. Here is the method to add more than 5000 friends on Google+
- Go to https://plus.google.com/circles, select one of your circles on a tab view, then click on More action, choose Block to block some of them. (If you want to add another 200 people to get 5200 friends in your circles, you have to do this step ten times)
- Go to Find and Invite tab to add more friend to your currenly circles or you can go to any profile with 5000 friends to get add friends from them.
- When you reach 5000 friends again, click on your Blocked Circles, it will open blocked list.
Now, in this list, select 34 ( max ) people and then click on More action, choose Unblock, repeat this step untill your Blocked circles is empty and disappear on your circles list. Repeat this until finished
simple as this method is ,but works like a charm.