Streaming video service Hulu’s decision to use Facebook’s “Like” button on its webpages may have violated a federal law that forbids companies from sharing customers’ video histories, according to a San Francisco court decision that could spell trouble for other companies.

In a 27-page ruling full of technological details, U.S. Magistrate Judge Laurel Beeler refused to dismiss a class action complaint that accuses Hulu of violating… [Read more on Gigaom]