How many people use authorization widgets on websites?

Question

Facebook

When creating a small site with user registration, I wondered if authorization / registration through social networks was needed. I myself never use it, preferring the classic registration by email. Now I suddenly wondered if this fashion trend is so effective? What is the ratio between the number of registrations via email and via social services?

Answer 1

Logging in through a social network is much safer than entering the same password on the thousandth site in a row, which for some reason requires registration. And remembering a thousand different passwords is not an option.
Therefore, when it is possible to go through Googleplus, VKontakte or Facebook, I always go through them, in that order. By the way, I created accounts on Facebook and VKontakte solely to access websites through them.

Answer 2

Not a lot. Many people are too lazy to once again fill in all the data in the registration form, and then they pressed one button and logged in. About 70% of me are authorized through social networks.

Answer 3

unless you plan to use promotion through Facebook and actively use user profiles

Answer 4

Do not use. Anyway, after logging in through the social network, you will be required to fill in the same fields ...
The expectation is that if the user has already done part of the work, he will regret the time spent and will bring the process to the end.