There is something therapeutic about nudity as we feel more connected to people plus it is an exhilarating experience. A nudist at heart like these celebs would evidently enjoy the company of other nudists. Like Kevin Bacon, Kate Humble and Robbie Williams share their nudity passion with their partners and family; similarly there are many celebrities who intend to find a nudist partner. Clearly it's hard to find such openness in people but they could find their partners on the online dating sites.
It is easier for the celebrities to find a match on an online nudist dating site. After all, who would not wish to meet up a celebrity who is a nudist? This could take rounds as news in some localities. But the inherent obstruction to this idea by most general people can severely limit their involvement in a dating site focusing on nudism. This might be detrimental in the initial runs, when people are still adjusting to the new idea, but in a longer run, the amount of exposure to new ideas can help people see new avenues in life. Having a dating partner who shares some of these beliefs can be so much relaxing for those who have been repressed.
With a proper goal, some very good people on board, and some good marketing strategies, the idea of a nudists-oriented dating site can be realized easily. It might not be an easy task to do, but then, what good thing has ever been easy?