Did Pinterest's 'first investor' steal ideas for the site?

Pinterest and one of its investors have been sued by an individual who is claiming some of the basic ideas behind the site were stolen. As reported by AllThingsD, the suit was filed yesterday on behalf of Theodore F. Schroeder, alleging "misappropriation, unjust enrichment, and breach of fiduciary duty" against both Pinterest itself and one of the startup's investors, Brian S. Cohen. According to the court filing, Schroeder had been working on a web application called Rendezvoo that would let us...