I've found a loophole that wouldn't violate the spirit of the deal, though for many people it would still not work well.
If you have a job that requires a good amount of writing, or spend a lot of your time doing writing, you can do the writing on the site and, so long as you post your messages on some random dead board (or a board that is relevant to the topic at hand if it'd upset the genie), it should count as posting. You can write a story or play on the creative writing board if that's an ambition you couldn't follow because of career restraints, or write up lab reports, technical papers, derivations, etc on the science board.
it'd still not be great, but at least it's productive
Yeah, that's not really a "loophole" so much as a creative way to maximize the value of your time. ---