Google Plus, the latest Social Network, Changed it rules about invites.
Now, it has a limit of only 150 invites.
Maybe, that is a indication that it will soon be available to public,
or they just want to stop people from inviting TOO many people.
Whatever the cause, it now limits.

Info about G+ : Google.com/Plus
If you want, buy invites here : Selling G Invites

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