Robert_Charlton - 10:04 pm on Aug 12, 2010 (gmt 0)
tedster - Well spotted... I've never seen it before either. May almost be worth splitting off as a discussion on its own, though it certainly relates to the very general kind of search some of us are discussing.
Wonder what types of query terms trigger that - things that are just too generic, or things that are members of a larger class?
I'm seeing both...
In the case of some single word searches (single words seem to be one of the triggers), they're often synonyms... but they can also be similar kinds of large classes....
There is a hint of a kind of classification structure that might be worth pursuing.