According to a post on Hacker News, the cofounders of the “light-blogging” site Posterous have created Posthaven, a “sustainable replacement” for the site. As of right now, we’re having trouble accessing the site, and judging by the HN comment thread, it looks like the new site’s servers may be overloaded. Posterous announced it would be shutting down today to focus on Twitter, which had acquired it. [Source: Hacker News]