I like it. ;-)

I mainly associate "folk" with a broad cross-section of songs that can range from traditional and ethnic music through modern singer-songwriter music played by people who have been influenced by the past folk tradition to some extent.

The main way in which it differs from most radio music is that the folk audience pays a lot more attention to the words than the pop or rock audience does...and folksongs more often address serious or complex issues than is the case in other forms of popular music...though they can also be lighthearted songs "just for fun".

In the final analysis, though, this is what it comes down to:

I listen to singers whose style I like and whose songs I like and whose sound I like. They might be thought of as "folksingers", they might be thought of as something else. Either way is fine with me. I never see a better mix of music than I see at folk festivals, but not all of it is what I would call "folk music".