The guys behind Stackoverflow and Trello have a positive tracking record. There is no evidence it will change. :)
However you raise a good point: exportability/portability of the data...
However you raise a good point: exportability/portability of the data...
Disclaimer: I'm a developer on Trello.
But unless you're expecting only developers/programmers to use Trello, then saying "using the Trello API or just by appending '.json' to pretty much any URL" is basically worthless to most people. Our definitions of "very easily" must be enormously different.
I mention that because a vastly saner export tool that's highly newbie-friendly is outlined at https://trello.com/card/bulk-data-export-for-organizations/4...