Defining a perfect blogging tool

"Metafilter" Matt Haughey just finished migrating one of his blogs to a new back-end, and the experience has left him with a lot of smart thinking about what the perfect blogging tool should be like:

There really should be a standard of some sort that blog CMS companies can agree on for export and import. Users of blog engines shouldn't be hostages to their applications. Data exit and entry is problematic in everything I've used and it's a shame. Blogging is supposed to be fun and I prefer to be agnostic about what tools I'm using, so it'd be nice if I could change blog engines every three months without too much friction. I won't even go into how every engine has its own URL scheme – it'd be nice if I could keep my permalinks forever, even as I change blogging apps.

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