Google vs. Bing

I guess this is a bit narcissistic, but I've noticed I'm the top result in a Google search but the seventh in a Bing search. I wonder what this means? How can I get Bing to notice me more?

"female gay sex"

Sitemeter tells me that someone from New Zealand came here after they Googled the above three words.

Yeah, go figure. They ain't finding that here...