It was just a matter of time before Twitter shut the blogging platform Posterous down, after acquiring the company last March. The team had already been folded into the flock, but this means that nobody has to worry about pesky service interruptions of keeping the service’s diminishing number of users happy. The site will be shutting down on April 30th, but it’s not a completely sad story. Have no fear, Posterous co-founder Garry Tan is coming to the rescue with a new site called Posthaven, which he promises will never shut down. Here’s what Tan had to say about the launch when we spoke to him: I’m teaming up with another cofounder of Posterous, Brett Gibson, and we are taking a pledge to keeping the URLs online forever. It’s $5 a month and will have all of the ease of use and power of Posterous. It’s just the two of us and we’re coding it in our bedrooms right now. Tan tells us that Posthaven will never accept funding and will be available to its users “forever.” Here’s what the Posterous/Twitter team had to say about the shutdown, along with instructions on how to get your data: Posterous launched in 2008. Our mission was to make it easier to share photos and connect with your social networks. Since joining Twitter almost one year ago, we’ve been able to continue that journey, building features to help you discover and share what’s happening in the world – on an even larger scale. On April 30th, we will turn off posterous.com and our mobile apps in order to focus 100% of our efforts on Twitter. This means that as of April 30, Posterous Spaces will no longer be available either to view or to edit. Right now and over the next couple months until April 30th, you can download all of your Posterous Spaces including your photos, videos, and documents. As Twitter delves into how to make discovery easier for its users, some of the findings learned by Posterous will most definitely come into play. On the other hand, it’s nice to know that there’s an easy way to move your information, with one of Posterous’ co-founders providing the service “from the heart.” Posthaven is currently taking reservations for its service, so grab your name. UPDATE: It looks like Posthaven is having difficulties managing all of the attention: [Photo credit: Flickr]