What's a .post file when it's at home, I bet you're wondering. Well, it's to do with blogging, so, if you're not one of the new breed of Domino bloggers, you might as well stop reading now.
Post files are associated with w.bloggar, a client interface between you and your online blog. It's a nice little HTML editor that lets you post directly to your blog and includes such desirables as previewing and spell-checking.
But surely as somebody who uses Domino to blog this is of no use without a suitable API. Well, yes and no. For the past few weeks I've been using it purely for the convenience of being able to draft blogs and preview them (anybody who's used the DomBlog template will appreciate what a difference this makes). However, I've since decided this isn't good enough and I've started work on DomBlog API v1.0. I can't promise it any time soon but it should be worth the wait.
Update: Just posted my first blog to a DomBlog DB from w.bloggar via the Blogger.com's XML-RPC API. Cool.