Inviting people for chat in Gmail

Hello friends…
This topic seem to funny for you as this is a simple method which everyone would know. But at this instance I found there will be some problem for the begginers. Its some simple step to be followed !!!

Go to your account. The problem comes as there is two spaces were we can type the Gmail Id. Hence our people make this mistake.
So this image will give you a clear idea to invite people without confusion.

Hope so it was useful !!!