By filing the lawsuit, the bottom line is that she is trying to legally force a private business to offer her a product that they choose not to provide.There's a slight, but very significant difference here. If a gay person were to register with eHarmony, and request a product that they do offer (meaning a matching service for the other gender), I'm sure they would comply. They just simply did not offer the specific product she was looking for.
On the other hand, the lunch counters you mention were denying service of a product that they did offer, to a specific segment of the population. It's very different to say, "We have ham sandwiches, but we will only serve them to white people, not to black people...
Don't get me wrong, HotBulge, I'm a very outspoken civil rights defender and activist. I just think that her lawsuit was exceptionally poorly chosen, poorly executed, and extremely counterproductive to the equal rights cause.