With a population of 301 million people, this means, about 1% of the population comprises of millionaires.
This may seem like a small percentage but if you live in a city, the percentage in probably higher. In November 2006 Gary Gates, senior research fellow at the Williams Institute on Sexual Orientation Law and Public Policy at the University of California, Los Angeles did a survey and estimated the United States gay population to be 8.8 million.
When you go this route, you make it too obvious that you're looking for someone very wealthy and come across as a gold-digger.
This defeats the very purpose because multimillionaires are generally wary of gold diggers and you'll only scare them away.
You can specify your sexual preferences when you sign up and search with similar sexual preferences. American Singles American Singles is another very large site which has been around for a really long time.