OpenID: Built In With MT4

As we continue through our list of what's new in Movable Type 4.0, one of the innovations that's had the community most excited is the built-in support for OpenID authentication for commenters. We've been talking about the momentum around OpenID for months -- over 100 million identities are OpenID-compatible today. And now, with MT4, any of those users can sign in to comment on your blog without having to create a new login or password: Movable Type 4 includes OpenID authentication for your commenters, built right in.

On top of general OpenID support, MT4 lets you add in service-specific plugins to provide even smoother integration between third-party OpenID-enabled services and your MT-powered site. Of course Movable Type 4 also provides its own built-in authentication service, if you choose. But some of the coolest options are the ones from other sites -- out of the box, MT4 has authentication integration for:

• Movable Type's built-in registration
  
• Generic OpenID
• LiveJournal
• TypeKey (includes all TypePad users)

But the energy that the MT4 community has shown since the platform's launch is reflected in OpenID support, as well. Community member Minh Nguyễn has created an OpenID connector for AIM and AOL logins. That's almost 90 million potential users who don't have to create a password to sign in on your blog's comments! And our own Byrne Reese, product manager for Movable Type, has stepped to the plate with a WordPress OpenID Login plugin for MT4, which supports anyone using the wordpress.com service. Both of these are made possible through MT4's authentication plugin framework, which is accompanied by some spiffy new developer documentation.

We're always happy to see the industry embrace open standards, and as OpenID was first incubated at Six Apart, we're especially proud to have the first professional blogging system that's incorporated OpenID natively into the platform. We'll be watching carefully to see how you use OpenID on your sites, and expanding our support even further in the future.