No point. My online identity was around long before I met him, while married to him, and after I divorced him. It's more solid than our marriage was.
Although it brings up an interesting point, should I ever marry again, if I'd have a wedding website or the like and what name to use since I wouldn't care for my ex-husband to hear about me tying the knot again. But then why should I try to hide that part my life? If he's going to look me up, he'll find out my marital status, anyway.