Use FSB's internet rule of thumb here:
"If the site has to drum up business by uncreatively registering the noun that it is selling, then its probably not the best deal."
thus:
don't gamble on sports at sports-gambling.com
don't look for porn on porn.com
don't search at search.com
and so on...
there's bound to be a olympic, a google, a persiankitty out there for every subject.
There may be a few exceptions to this rule, but not many.