Earlier this afternoon, I was pointed to (by Steve Rubel, not surprisingly) to a post up on Wayne Sutton’s blog that intimated that Post.ly (or Posterous) is the platform of the future.

I’d respectfully disagree.

Posterous is a blog style CMS that uses your email client as your post window.  Simply, you email your post to Posterous, and it creates a blog post out of it for you.

I see the appeal, for newbies at least.  You’re able to create a blog without going through the extensive account setup and configuration you must go through on most other services.  A laundry list of influencers regularly maintain a Post.ly blog: Chris Brogan, Steve Rubel, Mike Arrington, Ted Murphy, Andy Beal, Jason Falls and iJustine to name a few.

Here’s my problem with Posterous, at least as the hot new trend with the digerati: this is not a new feature.

Blogger, one of the first white-label blogging services, has had this functionality almost since it’s inception.  WordPress has had this functionality as well.  It’s trivially easy to set both of these up, and then to allow email posting.

There’s very little that Posterous offers that can’t be either hobbled together from other free services or turned on out of the box with most available blog CMS’s.

Beyond that, almost every other CMS is far more extensible and robust, allowing you to grow beyond simple posts.

So I ask again: why is Posterous the platform of the future?