Posterous is based in San Francisco and emerged in 2008 from the Y Combinator accelerator program. Although it is similar to other blogging platforms and offers a web-based service and a mobile app, Posterous was designed for use on mobile devices.
Co-founder Sachin Agarwal instructed users today to remove their data from Posterous “spaces,” or blogs, by April 30. WordPress and Squarespace offer tools to import data from Posterous. Users can also download their data directly from Posterous.
Another co-founder, Garry Tan, has launched a blogging platform that promises never to accept funding or be purchased in order to guarantee that URLs will last “forever.” The service, Posthaven, costs $5 a month.