How to avoid being a blogging orphan

Posterous is closing April 30, and while its bloggers can still download their content, that's not good enough, Ruud Hein writes: "They can upload it elsewhere, maybe on their own site this time, but Posterous won't setup the crucial web server status code … that tells search engines to take all their ranking information for the old URL and use it for the new URL." Hein then outlines a strategy for bloggers who want to go and stay independent.