Masi Oka felt obliged to sign up to social networking site Facebook.com after discovering fraudsters were posing as the Heroes star online.

The actor only learned of the imposters after one friend was tricked into thinking the profile really belonged to him - and although he rarely uses the website, he's glad his pals can now get in touch with the real Masi Oka.

He says, "My Facebook page actually came about because I was at a function and my friend came up to me and said, 'I've just uploaded a picture from our party last week onto your Facebook page.' I was like, 'I don't have a Facebook page...' and he was like, 'Oh really?' So I looked it up and there's someone posing as me. So I was like, oh god, I better make my own one...I don't use it but it's just so my friends can communicate with each other and know that it's me. But I haven't updated it for like, three months."

(This news article provided by World Entertainment News Network)