For example, is putting scare quotes around "scare quotes" appropriate? Wikipedia says the term means usage of quote marks "to indicate that [a word or phrase] does not signify its literal or conventional meaning," which seems a bit off the mark. Further on, the entry says "scare quotes may indicate that the writer does not accept the usage of the phrase (or the phrase itself), that the writer feels its use is potentially ironic, or that the writer feels it is a misnomer. This meaning may serve to distance the writer from the quoted content." Better, but still offers minimal guidance on usage.
The question arose in my mind today when reading this phrase in the Washington Post: "...said Vint Cerf, Google vice president and "'chief internet evangelist.'" I'll admit the title is a bit odd, but it's official (even capitalized) according to Google. In this case the usage of scare quotes seems off base.