I joined match.com and my best matches are all white guys in their 50s.  
Not that I wouldn't date white people or even someone outside of my age range, but on the internet, it's very hard to determine if a white guy or old guy is only sending me a message because I'm his fetish.
Ya know?
That's why I generally stick to my own age range (or slightly above) and race, when it comes to internet dating.