Posterous, a popular blogging platform that was acquired by Twitter last year, has announced that it will be shutting down as of April 30. The site says that they are shutting down in order to focus on Twitter and there will be no more viewing or editing content past the shutdown date.

Because of this, Posterous is offering users the ability to download their data. WordPress and Squarespace are alternatives and both feature importers for Posterous data. A "backup" option is also provided and it will provide you with a zip file containing your data. You can request a backup by heading to the Posterous site.

"We'd like to thank the millions of Posterous users who have supported us on our incredible journey. We hope to provide you with as easy a transition as possible, and look forward to seeing you on Twitter."