Ask Slashdot: An open product review website

MastaBaba writes: "I want to move my personal reviews (of books, games, music and films) from my website to an online product review website. However, I would -like- to be able to bulk upload my existing reviews and I would -require- my reviews to be downloadable, by me, in, say, CSV, at any time in the future.
Goodreads allows for import/export of book reviews, and IMDB allows you to export your ratings, but what about game and music reviews? What website aggregates consumer reviews of (all?) products, while allowing for each individual user to easily import and export his own reviews?"