Will it be ethical to offer some sort of incentive (like free points / discount on our shopping site) to our user for clicking G+ button on our website?
And, more importantly, will it be against the policy of Google+?
I have seen people offering these type of incentive on Facebook to click on Like button. I am not sure, even if that is allowed. But as a large number of sites are doing this, may be it's ok.
Thanks in advance for your feedback.