Solution: There are several options / workarounds but my favorite is Blog It! – this blogging editor is available as a Facebook application and lets you send the same article to multiple blogs in one go.

You first associate all your different blog accounts with Blog It! and then check the ones where you want to publish that particle post. The blog editor supports only plain text but it can correctly parse all the included HTML tags.

And though Blog It! is a product of TypePad, it works will all popular blog platforms like Tumblr, Blogger, WordPress.com, self-hosted WordPress,  Movable Type and LiveJournal.