Do you think sites should offer the option of login via social media profile as well as the normal username/password?
Yes, i think they should offer this, it would make things much easier and we could avoid unnecessary signing up on new sites just to check them. It is not so damn hard to create few accounts on facebook and use them for gambling log in if such exists on gambling sites. Just make sure to separate your private facebook account from your "business" one.
Yeah you're right. You can make dummy accounts for such purposes and no need to disclose any personal information that can compromise your security. And i don't think there are that many gambling sites that would require logging in with social media accounts anyways but if a site you really prefer does this, then just make a dummy account
Now all gambling sites are updated they will not ask any our email id or another thing to log on their website just enter your username and submit you will get into the website. Inside if you want you can provide your email id or else, it is not mandatory to update our personal id in gambling site. And sharing our personal contact details in gambling site is not safe. Better you can use alternative contact details.