The Oxford Dictionary is implemented in the current release of the Mac OS codenamed Tiger. It is using an odd line for an application example of the word blog in american english. Sure, it's just to show how it is used in a sentence. But how many will mistake this as an explanation? I don't know what they were thinking when they were adding this line. There are obviously better examples to choose from, hopefully considered for an updated dictionary.

The Oxford Dictionary: blog |bläg| noun a weblog : blogs run by twenty-something Americans with at least an unhealthy interest in computers.