The Comparisons

Facebook Connect lets you use your Facebook ID and password to sign-in to third-party sites. It's kind of like another Web-wide sign-on protocol called in that regard, but Facebook strikes me as having far greater potential of taking off on a large scale.

The reason? It's easy to use, understand, and control -- and users won't have to do any extra work to find it or make it function. OpenID, if you're not familiar with it, lets you use a single username and password to sign-on to numerous sites. But let's be honest: How many average, non-techie-type Web users are even aware OpenID exists? Odds are, most people have an OpenID-linked account somewhere. But does the typical Internet surfer even know what it is or how it'd be used?

Facebook Connect has visibility on its side. As the most visited social network worldwide, according to traffic measurement data by , it has an audience already connected and ready to roll. And with 100-plus partners expected to be on-board within Connect's first weeks, there will be plenty of places for that audience to go. Sites like CBS, CNN, and CitySearch are already signed up. My.BarackObama.com is said to be . And countless blogs and Web sites are sure to follow.

Two-Way Connection