If you remember, there used to be a popular login protocol call OpenID that allow you to login to various websites using just one ID. However, as social networks such as Facebook, Twitter and Google+ become popular, more and more websites are ditching OpenID and switch to social connect buttons where you can click to login using your social network credential.
While it is making things easier for you, it also means that websites now have access to your personal profile, and possibly, permission to post to your wall without your knowledge. On the other hand, your personal profile is publicly viewable in your social network, so it doesn’t really matter if websites have access to it. Similarly, being socially connected being you can share stuff from the website to your wall much quicker.
Over to you: how comfortable are you in logging in to websites with your social network credential?
Image credit: The Art of Social Media