Los Angeles-based Hulu, the online television streaming site, said today that it has opened up access to its Hulu Plus services . The firm--which had previously been restricting the service to a preview subscriber base--said anyone can now join the service. The service had previously required an invitation to join. Hulu also said that all PS3 owners with a PlayStation Network account will also be able to access the service, and that Hulu Plus will be available on Sony BRAVIA 2010 TVs. Hulu Plus offers up access to additional content and features of the Hulu service, and was launched about five months ago.