Hello,

I want to know if integration with Gmail scales up the number of users who register for my forum.

Can I see how many people registered with Gmail integration? 

Maybe Google Analytics could help?

 

There are not currently reports/statistics on Google based registrations through the Google Login Provider.

I have not seen any third party integration really drive up the number of users who register.  If users are going to register, they'll do so if they find value in your content.  Not simply because of the login methods available.  

I posted about this back in May. Some reporting would be great within ACP.