[userbinator]

lots of folks

I wonder if these were the general population of users seen today, since AFAIK foo/bar are not in the vocabulary of most people as metasyntactic variables; I hear "blah" more commonly used for this purpose.

[TeMPOraL]

It's not in the vocabulary of users (who don't know what "metasyntactic" means anyway), but it's still prominent in the vocabulary of developers.