San Francisco-based Posterous has distinguished itself from competitors and launched Posterous Spaces, allowing you to publish content to a select audience.

Posterous is a simple publishing platform similar to Tumblr and WordPress. What makes it different is that it offers the ability to post things online quickly through email and distribute content to other platforms, including WordPress, Twitter, Facebook, and LinkedIn.

The biggest change is Spaces. Spaces are what Posterous used to call “sites,” places where you can share privately or publicly with friends, family, or groups. Founder Sachin Agarwal believes that a site or a blog is too web focused, whereas “space” could be anywhere.

All of your previous blogs are now called Spaces. Though the name may be different, nothing has changed and you will still have the same design, settings, domain, etc. Adding members to your Space is easy and can be done through your Space’s website, a mobile device, or email.

In addition to Spaces, Posterous has updated its Reader feature – which allows you to skim through published content – by giving it an improved and simplified user interface. New sections have been added that will highlight the most popular content on Posterous and provide you with an activity feed surrounding your account that will include new likes, new comments, new follows, and more.

Sharing while on the go is now easier with the addition of Posterous Spaces for the iPhone. It offers all of the same functionality that Spaces provides on the web so you will be able to browse your reader, view the latest activity, share anything into your Spaces, upload photos, and so on.

The update has essentially revamped Posterous. While it appears to be a major change, and it is, it has actually simplified how the service works and made it a stronger competitor to platforms like Tumblr and Google+. Posterous has become platform-agnostic. It lets you share what you want with exactly who you want, how you want, and without any privacy concerns.

[Via: The Next Web]