Getting YP's to attend an event has always been a challenge, so the Taft Museum is trying the Myspace route, and the claim good results. I'm torn on the use of Myspace. The idea of social networks are a good way to market to a large number of people. It isn't a great way to express yourself or share in depth ideas. The website's technology is also very unreliable. It is popular, however, so I use it.
Side note, the above article provided a nice mention for Cincinnati Advance.