If you know the u.r.l of their web site you can have an access to the site but as regards the benefit, you can know only what they have done so far in the film, what new film is coming. Some of the actresses have launched the web site to profess their achievement other than those in the films like proficiency in dances, yog, music or other fields of their interest. e.g. Shilpa shetty is very good practitioner of YOG and she highlights this personal aspect of her life. She also brings out C.D.s displaying the method of performing some asans for general good.
Contacting directly on the internet is just by leaving a scrip on their blog if they have made a provision for. Otherwise personal contacts or chatting is avoided.