Del, Cynique was asking about the existence of the G-Spot. Female ejaculation really is another issue; you don't have to ejaculate when you climate as a result of stimulating the G-Spot and you can ejaculate as a result of vaginal stimulation.
Del using the resource you provided, you can see the two things are of course related but not necessarily dependent upon each other:
Despite earlier contrary claims, researchers have found evidence that a sensitive area (Grafenberg Spot) exists in the vaginal barrel. This area is a potential source of orgasm independent of clitoral stimulation. Other researchers have reported that some women experience a sudden spurt of fluid at the moment of orgasm. In the interest of contributing to further understanding of physiological and psychological sexual satisfaction, and alleviation of concerns about perceived urination during orgasm, the investigators explored a series of variables thought to be associated with perceptions of the Grafenberg Spot and its relationship, if any, to the female orgasmic response and female ejaculation. An anonymous questionnaire was distributed to 2,350 women in the United States and Canada, with a subsequent 55% return rate. A number of factors were found to be associated with perceived existence of a sensitive area in the vaginal barrel which, when properly stimulated, activates orgasm. Women who reported sensitive area orgasms were also more likely to report a spurt of fluid at moment of orgasm.
Apparently, most women have never climaxed as a result of G-Spot stimulation and a large percentage of women have never climaxed at all...