The features Twitter feeds of users' real time comments about newly released films and the current US box office top ten, as well as the top ten most talked about movies at present.
Movies listed on the site at the moment include 'Harry Potter and the Half Blood Prince', 'The Ugly Truth', 'The Hangover' and 'The Proposal', among others.
Each listing on the site features a synopsis of the film and a web link to The New York Times review of the movie, followed by real-time comments being posted by Twitter users.
The free service also has links to trailers of the movies.
Initially using only as a feed, Skinni Popcorn will introduce other social media sites into the mix as it grows and develops its community.
Brendan Dawes, creative director at magneticNorth, said: "Skinni Popcorn is effectively a movie review site that's been on a very strict diet.
"We removed the unneeded and just left the needed so people can fire it up, get a quick overview of whether a film is worth seeing, powered by everyday people like you, and then get on with the rest of the day."
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